F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINEERING IN GENERAL
 F16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
 F16H
GEARING
 F16H

Note(s)

  1. In this subclass, sets of rigidly-connected members are regarded as single members.
  2. In this subclass, the following terms or expressions are used ith the meanings indicated:
    • "toothed gearing" includes worm gearing and other gearing involving at least one wheel or sector provided with teeth or the equivalent, except gearing with chains or toothed belts, which is treated as friction gearing;
    • "conveying motion" includes transmitting energy, and means that the applied and resultant motions are of the same kind, though they may differ in, e.g. speed, direction, extent;
    • "rotary" implies that the motion may continue indefinitely.
    • "oscillating" means moving about an axis to an extent which is limited by the construction of the gearing and which may exceed one revolution, the movement being alternately forwards and backwards during continued operation of the gearing;
    • "reciprocating" means moving substantially in a straight line, the movement being alternately forwards and backwards during continued operation of the gearing;
    • "reversing" or "reversal" means that an applied movement in one direction may produce a resultant movement in either of two opposed directions at will;
    • "central gears" includes any gears whose axis is the main axis of the gearing.
  3. Attention is drawn to the following places:
    A01D 69/06Gearings in harvesters or mowers 
    A63H 31/00Gearing for toys 
    B21B 35/12Toothed-wheel gearing for metal-rolling mills 
    B60KArrangement of transmissions in vehicles 
    B61C 9/00Transmissions for railway locomotives 
    B62D 3/00Vehicle steering gears 
    B62MTransmissions for cycles 
    B63H 23/00Transmissions for marine propulsion 
    B63H 25/00Marine steering gears 
    F01-F04Machines, engines, pumps 
    F15B 15/00Gearings associated with fluid-actuated devices 
    G01D 5/04Gearing used in indicating or recording apparatus in connection with measuring devices 
    H03J 1/00Driving arrangements for tuning resonant circuits 
    H04L 13/04Driving mechanisms for apparatus for transmission of coded digital information.  [5] 
 F16H
Subclass index
GEARINGS NOT LIMITED TO ROTARY MOTION
Mechanical gearings
using levers, links, or cams 21/00 - 25/00
using intermittently-driving members 27/00 - 31/00
other gearings; combinations of gearings 19/00, 33/00, 35/00; 37/00
details 51/00 - 57/00
Fluid gearing 43/00
GEARINGS FOR CONVEYING ROTARY MOTION
Toothed gearings 1/00, 3/00
Using endless flexible members 7/00, 9/00
Other friction gearing 13/00, 15/00
Fluid gearing 39/00, 41/00, 45/00
Using intermittently-driving gearing 29/00
CONTROL
of change-speed- or reversing-gearings conveying rotary motion 59/00 - 63/00
COMBINATIONS OF GEARINGS; DIFFERENTIAL GEARINGS; OTHER GEARINGS 47/00; 48/00; 49/00
GENERAL DETAILS OF GEARINGS 57/00
 F16H 1/00 - 
F16H 3/00
Toothed gearings for conveying rotary motion
 F16H 1/00
Toothed gearings for conveying rotary motion (specific for conveying rotary motion with variable gear ratio or for reversing rotary motion F16H 3/00)
 F16H 1/02
·  without gears having orbital motion
 F16H 1/04
·  ·  involving only two intermeshing members
 F16H 1/06
·  ·  ·  with parallel axes
 F16H 1/08
·  ·  ·  ·  the members having helical, herring-bone, or like teeth
 F16H 1/10
·  ·  ·  ·  one of the members being internally toothed
 F16H 1/12
·  ·  ·  with non-parallel axes
 F16H 1/14
·  ·  ·  ·  comprising conical gears only
 F16H 1/16
·  ·  ·  ·  comprising worm and worm-wheel
 F16H 1/18
·  ·  ·  ·  the members having helical, herring-bone, or like teeth (F16H 1/14 takes precedence)
 F16H 1/20
·  ·  involving more than two intermeshing members
 F16H 1/22
·  ·  ·  with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
 F16H 1/24
·  ·  involving gears essentially having intermeshing elements other than involute or cycloidal teeth (F16H 1/16 takes precedence)
 F16H 1/26
·  ·  Special means compensating for misalignment of axes
 F16H 1/28
·  with gears having orbital motion
 F16H 1/30
·  ·  in which an orbital gear has an axis crossing the main axis of the gearing and has helical teeth or is a worm
 F16H 1/32
·  ·  in which the central axis of the gearing lies inside the periphery of an orbital gear
 F16H 1/34
·  ·  involving gears essentially having intermeshing elements other than involute or cycloidal teeth (in worm gearing F16H 1/30)
 F16H 1/36
·  ·  with two central gears coupled by intermeshing orbital gears
 F16H 1/46
·  ·  Systems consisting of a plurality of gear trains, each with orbital gears
 F16H 1/48
·  ·  Special means compensating for misalignment of axes
 F16H 3/00
Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion (speed-changing or reversing mechanisms F16H 59/00-F16H 63/00)
 F16H 3/02
·  without gears having orbital motion
 F16H 3/02

Note(s)

In groups F16H 3/08, F16H 3/16 and F16H 3/20, gears which can be put out of mesh are not taken into consideration if they are used for reversal only.  [5]

 F16H 3/04
·  ·  with internally-toothed gears
 F16H 3/06
·  ·  with worm and worm-wheel or gears essentially having helical or herring-bone teeth
 F16H 3/08
·  ·  exclusively or essentially with continuously- meshing gears, that can be disengaged from their shafts
 F16H 3/083
·  ·  ·  with radially acting and axially controlled clutching members, e.g. sliding keys  [5]
 F16H 3/085
·  ·  ·  with more than one output shaft  [5]
 F16H 3/087
·  ·  ·  characterised by the disposition of the gears (F16H 3/083, F16H 3/085 take precedence)  [5]
 F16H 3/087

Note(s)

When counting the countershafts, the reverse countershaft is not taken into consideration if it is used for reversal only.  [5]

 F16H 3/089
·  ·  ·  ·  all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved  [5]
 F16H 3/091
·  ·  ·  ·  including a single countershaft  [5]
 F16H 3/093
·  ·  ·  ·  with two or more countershafts  [5]
 F16H 3/095
·  ·  ·  ·  ·  with means for ensuring an even distribution of torque between the countershafts  [5]
 F16H 3/097
·  ·  ·  ·  ·  the input and output shafts being aligned on the same axis  [5]
 F16H 3/10
·  ·  ·  with one or more one-way clutches as an essential feature
 F16H 3/12
·  ·  ·  with means for synchronisation not incorporated in the clutches (synchronised clutches F16D 23/02)
 F16H 3/14
·  ·  ·  Gearings for reversal only
 F16H 3/16
·  ·  essentially with both gears that can be put out of gear and continuously-meshing gears that can be disengaged from their shafts
 F16H 3/18
·  ·  ·  Gearings for reversal only
 F16H 3/20
·  ·  exclusively or essentially using gears that can be moved out of gear
 F16H 3/22
·  ·  ·  with gears shiftable only axially
 F16H 3/24
·  ·  ·  ·  with driving and driven shafts coaxial
 F16H 3/26
·  ·  ·  ·  ·  and two or more additional shafts
 F16H 3/28
·  ·  ·  ·  ·  ·  an additional shaft being coaxial with the main shafts
 F16H 3/30
·  ·  ·  ·  with driving and driven shafts not coaxial
 F16H 3/32
·  ·  ·  ·  ·  and an additional shaft
 F16H 3/34
·  ·  ·  with gears shiftable otherwise than only axially
 F16H 3/36
·  ·  ·  with a single gear meshable with any of a set of coaxial gears of different diameters
 F16H 3/38
·  ·  ·  with synchro-meshing
 F16H 3/40
·  ·  ·  Gearings for reversal only
 F16H 3/42
·  ·  with gears having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
 F16H 3/44
·  using gears having orbital motion
 F16H 3/46
·  ·  Gearings having only two central gears, connected by orbital gears (F16H 3/68-F16H 3/78 take precedence)
 F16H 3/48
·  ·  ·  with single orbital gears or pairs of rigidly-connected orbital gears
 F16H 3/50
·  ·  ·  ·  comprising orbital conical gears
 F16H 3/52
·  ·  ·  ·  comprising orbital spur gears
 F16H 3/54
·  ·  ·  ·  ·  one of the central gears being internally toothed and the other externally toothed
 F16H 3/56
·  ·  ·  ·  ·  both central gears being sun gears
 F16H 3/58
·  ·  ·  with sets of orbital gears, each consisting of two or more intermeshing orbital gears
 F16H 3/60
·  ·  ·  Gearings for reversal only
 F16H 3/62
·  ·  Gearings having three or more central gears (F16H 3/68-F16H 3/78 take precedence)
 F16H 3/64
·  ·  ·  composed of a number of gear trains, the drive always passing through all the trains, each train having not more than one connection for driving another train
 F16H 3/66
·  ·  ·  composed of a number of gear trains without drive passing from one train to another
 F16H 3/68
·  ·  in which an orbital gear has an axis crossing the main axis of the gearing and has helical teeth or is a worm
 F16H 3/70
·  ·  in which the central axis of the gearing lies inside the periphery of an orbital gear
 F16H 3/72
·  ·  with a secondary drive, e.g. regulating motor, in order to vary speed continuously
 F16H 3/74
·  ·  Complexes, not using actuatable speed-changing or regulating members, e.g. with gear ratio determined by free play of frictional or other forces
 F16H 3/76
·  ·  with an orbital gear having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
 F16H 3/78
·  ·  Special adaptation of synchronisation mechanisms to these gearings
 F16H 7/00 - 
F16H 9/00
Gearing for conveying rotary motion by endless flexible members (flexible members, e.g. belts, chains per se F16G)
 F16H 7/00
Gearings for conveying rotary motion by endless flexible members (specific for conveying rotary motion with variable gear ratio or for reversing rotary motion F16H 9/00)
 F16H 7/02
·  with belts; with V-belts
 F16H 7/04
·  with ropes
 F16H 7/06
·  with chains
 F16H 7/08
·  Means for varying tension of belts, ropes, or chains (pulleys of adjustable construction F16H 55/52)
 F16H 7/10
·  ·  by adjusting the axis of a pulley
 F16H 7/12
·  ·  ·  of an idle pulley
 F16H 7/14
·  ·  ·  of a driving or driven pulley
 F16H 7/16
·  ·  ·  ·  without adjusting the driving or driven shaft
 F16H 7/18
·  Means for guiding or supporting belts, ropes, or chains (construction of pulleys F16H 55/36)
 F16H 7/20
·  ·  Mountings for rollers or pulleys
 F16H 7/22
·  Belt, rope, or chain shifters
 F16H 7/24
·  Equipment for mounting belts, ropes, or chains
 F16H 9/00
Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members (control of change-speed or reversing-gearings conveying rotary motion F16H 59/00-F16H 63/00)
 F16H 9/02
·  without members having orbital motion
 F16H 9/04
·  ·  using belts, V-belts, or ropes (with toothed belts F16H 9/24; pulleys of adjustable construction F16H 55/52)
 F16H 9/06
·  ·  ·  engaging a stepped pulley
 F16H 9/08
·  ·  ·  engaging a conical drum (F16H 9/12 takes precedence)
 F16H 9/10
·  ·  ·  engaging a pulley provided with radially-actuatable elements carrying the belt
 F16H 9/12
·  ·  ·  engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
 F16H 9/14
·  ·  ·  ·  using only one pulley built-up out of adjustable conical parts
 F16H 9/16
·  ·  ·  ·  using two pulleys, both built-up out of adjustable conical parts
 F16H 9/18
·  ·  ·  ·  ·  only one flange of each pulley being adjustable
 F16H 9/20
·  ·  ·  ·  ·  both flanges of the pulleys being adjustable
 F16H 9/22
·  ·  ·  specially adapted for ropes
 F16H 9/24
·  ·  using chains, toothed belts, belts in the form of links; Chains or belts specially adapted to such gearing (toothed belts F16G 1/28; V-belts in the form of links F16G 5/18; toothed V-belts F16G 5/20)
 F16H 9/26
·  with members having orbital motion
 F16H 13/00 - 
F16H 15/00
Other friction gearing for conveying rotary motion
 F16H 13/00
Gearing for conveying rotary motion with constant gear ratio by friction between rotary members (specific for conveying rotary motion with variable gear ratio or for reversing rotary motion F16H 15/00)
 F16H 13/02
·  without members having orbital motion
 F16H 13/04
·  ·  with balls or with rollers acting in a similar manner
 F16H 13/06
·  with members having orbital motion
 F16H 13/08
·  ·  with balls or with rollers acting in a similar manner
 F16H 13/10
·  Means for influencing the pressure between the members
 F16H 13/12
·  ·  by magnetic forces
 F16H 13/14
·  ·  for automatically varying the pressure mechanically
 F16H 15/00
Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members (control of change-speed or reversing-gearings conveying rotary motion F16H 59/00-F16H 63/00)
 F16H 15/01
·  characterised by the use of a magnetisable powder or liquid as friction medium between the rotary members  [2]
 F16H 15/02
·  without members having orbital motion
 F16H 15/04
·  ·  Gearings providing a continuous range of gear ratios
 F16H 15/06
·  ·  ·  in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
 F16H 15/08
·  ·  ·  ·  in which the member B is a disc with a flat or approximately-flat friction surface
 F16H 15/10
·  ·  ·  ·  ·  in which the axes of the two members cross or intersect
 F16H 15/12
·  ·  ·  ·  ·  ·  in which one or each member is duplicated, e.g. for obtaining better transmission, for lessening the reaction forces on the bearings
 F16H 15/14
·  ·  ·  ·  ·  in which the axes of the members are parallel or approximately parallel
 F16H 15/16
·  ·  ·  ·  in which the member B has a conical friction surface
 F16H 15/18
·  ·  ·  ·  ·  externally
 F16H 15/20
·  ·  ·  ·  ·  ·  co-operating with the outer rim of the member A, which is perpendicular or nearly perpendicular to the friction surface of the member B
 F16H 15/22
·  ·  ·  ·  ·  ·  the axes of the members being parallel or approximately parallel
 F16H 15/24
·  ·  ·  ·  ·  internally
 F16H 15/26
·  ·  ·  ·  in which the member B has a spherical friction surface centered on its axis of revolution
 F16H 15/28
·  ·  ·  ·  ·  with external friction surface
 F16H 15/30
·  ·  ·  ·  ·  with internal friction surface
 F16H 15/32
·  ·  ·  ·  in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
 F16H 15/34
·  ·  ·  ·  ·  with convex friction surface
 F16H 15/36
·  ·  ·  ·  ·  with concave friction surface, e.g. a hollow toroid surface
 F16H 15/38
·  ·  ·  ·  ·  ·  with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
 F16H 15/40
·  ·  ·  in which two members co-operate by means of balls, or rollers of uniform effective diameter, not mounted on shafts
 F16H 15/42
·  ·  ·  in which two members co-operate by means of rings or by means of parts of endless flexible members pressed between the first-mentioned members
 F16H 15/44
·  ·  ·  in which two members of non-uniform effective diameter directly co-operate with one another
 F16H 15/46
·  ·  Gearings providing a discontinuous or stepped range of gear ratios
 F16H 15/48
·  with members having orbital motion
 F16H 15/50
·  ·  Gearings providing a continuous range of gear ratios
 F16H 15/52
·  ·  ·  in which a member of uniform effective diameter mounted on a shaft may co-operate with different parts of another member
 F16H 15/54
·  ·  ·  in which two members co-operate by means of rings or by means of parts of endless flexible members pressed between the first-mentioned members
 F16H 15/56
·  ·  Gearings providing a discontinuous or stepped range of gear ratios
   
 F16H 19/00
Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion (with intermittently-driving members F16H 27/00-F16H 31/00; rope or like tackle for lifting or haulage B66D 3/00)
 F16H 19/02
·  for interconverting rotary motion and reciprocating motion
 F16H 19/04
·  ·  comprising a rack
 F16H 19/06
·  ·  comprising an endless flexible member
 F16H 19/08
·  for interconverting rotary motion and oscillating motion
 F16H 21/00 - 
F16H 25/00
Gearing for conveying or converting motion by means of levers, links, or cams (combinations of gearings of different types F16H 37/00)
 F16H 21/00
Gearings comprising primarily only links or levers, with or without slides
 F16H 21/02
·  the movements of two or more independently-moving members being combined into a single movement
 F16H 21/04
·  Guiding mechanisms, e.g. for straight-line guidance (for drawing-machines B43L)
 F16H 21/06
·  which can be made ineffective when desired
 F16H 21/08
·  ·  by pushing a reciprocating rod out of its operative position
 F16H 21/10
·  all movement being in, or parallel to, a single plane
 F16H 21/12
·  ·  for conveying rotary motion
 F16H 21/14
·  ·  ·  by means of cranks, eccentrics, or like members fixed to one rotary member and guided along tracks on the other
 F16H 21/16
·  ·  for interconverting rotary motion and reciprocating motion
 F16H 21/18
·  ·  ·  Crank gearings; Eccentric gearings
 F16H 21/20
·  ·  ·  ·  with adjustment of throw (adjustable cranks or eccentrics F16C 3/28; adjustable connecting-rods F16C 7/06)
 F16H 21/22
·  ·  ·  ·  with one connecting-rod and one guided slide to each crank or eccentric
 F16H 21/24
·  ·  ·  ·  ·  without further links or guides
 F16H 21/26
·  ·  ·  ·  ·  with toggle action
 F16H 21/28
·  ·  ·  ·  ·  with cams or additional guides
 F16H 21/30
·  ·  ·  ·  ·  with members having rolling contact
 F16H 21/32
·  ·  ·  ·  ·  with additional members comprising only pivoted links or arms
 F16H 21/34
·  ·  ·  ·  with two or more connecting-rods to each crank or eccentric
 F16H 21/36
·  ·  ·  ·  without swinging connecting-rod, e.g. with epicyclic parallel motion, slot-and- crank motion
 F16H 21/38
·  ·  ·  ·  with means for temporary energy accumulation, e.g. to overcome dead-centre positions
 F16H 21/40
·  ·  for interconverting rotary motion and oscillating motion
 F16H 21/42
·  ·  ·  with adjustable throw
 F16H 21/44
·  ·  for conveying or interconverting oscillating or reciprocating motions
 F16H 21/46
·  with movements in three dimensions
 F16H 21/48
·  ·  for conveying rotary motion
 F16H 21/50
·  ·  for interconverting rotary motion and reciprocating motion (F16H 23/00 takes precedence)
 F16H 21/52
·  ·  for interconverting rotary motion and oscillating motion
 F16H 21/54
·  ·  for conveying or interconverting oscillating or reciprocating motions
 F16H 23/00
Wobble-plate gearings; Oblique-crank gearings
 F16H 23/02
·  with adjustment of throw by changing the position of the wobble-member (F16H 29/04, F16H 33/10 take precedence)
 F16H 23/04
·  with non-rotary wobble-members
 F16H 23/06
·  ·  with sliding members hinged to reciprocating members
 F16H 23/08
·  ·  connected to reciprocating members by connecting-rods
 F16H 23/10
·  with rotary wobble-plates with plane surfaces
 F16H 25/00
Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
 F16H 25/02
·  the movements of two or more independently-moving members being combined into a single movement
 F16H 25/04
·  for conveying rotary motion
 F16H 25/06
·  ·  with intermediate members guided along tracks on both rotary members
 F16H 25/08
·  for interconverting rotary motion and reciprocating motion (F16H 23/00 takes precedence)
 F16H 25/10
·  ·  with adjustable throw (adjustable cams F16H 53/04)
 F16H 25/12
·  ·  with reciprocation along the axis of rotation, e.g. gearings with helical grooves and automatic reversal (screw mechanisms without automatic reversal F16H 25/20)
 F16H 25/14
·  ·  with reciprocation perpendicular to the axis of rotation (F16H 21/36 takes precedence)
 F16H 25/16
·  for interconverting rotary motion and oscillating motion
 F16H 25/18
·  for conveying or interconverting oscillating or reciprocating motions
 F16H 25/20
·  ·  Screw mechanisms (with automatic reversal F16H 25/12)
 F16H 25/22
·  ·  ·  with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
 F16H 25/24
·  ·  ·  Elements essential to such mechanisms, e.g. screws, nuts (F16H 25/22 takes precedence)
 F16H 27/00 - 
F16H 31/00
Gearings with intermittently-driving members
 F16H 27/00
Step-by-step mechanisms without freewheel members, e.g. Geneva drives (rotary gearings with cyclically-varying velocity ratio F16H 35/02; impulse couplings F16D 5/00; clockwork escapements G04B 15/00)
 F16H 27/02
·  with at least one reciprocating or oscillating transmission member
 F16H 27/04
·  for converting continuous rotation into a step-by-step rotary movement
 F16H 27/06
·  ·  Mechanisms with driving pins in driven slots, e.g. Geneva drives
 F16H 27/08
·  ·  with driving toothed gears with interrupted toothing
 F16H 27/10
·  ·  obtained by means of disengageable transmission members, combined or not combined with mechanisms according to group F16H 27/06 or F16H 27/08
 F16H 29/00
Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action (freewheels F16D 41/00)
 F16H 29/02
·  between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts (F16H 29/20, F16H 29/22 take precedence)
 F16H 29/04
·  ·  in which the transmission ratio is changed by adjustment of a crank, an eccentric, a wobble-plate, or a cam, on one of the shafts
 F16H 29/06
·  ·  ·  with concentric shafts, an annular intermediate member moving around and being supported on an adjustable crank or eccentric
 F16H 29/08
·  ·  in which the transmission ratio is changed by adjustment of the path of movement, the location of the pivot, or the effective length, of an oscillating connecting member
 F16H 29/10
·  ·  in which the transmission ratio is changed by directly acting on the intermittently driving members
 F16H 29/12
·  between rotary driving and driven members (F16H 29/20, F16H 29/22 take precedence)
 F16H 29/14
·  ·  in which the transmission ratio is changed by adjustment of an otherwise stationary guide member for the intermittently-driving members
 F16H 29/16
·  ·  in which the transmission ratio is changed by adjustment of the distance between the axes of the rotary members
 F16H 29/18
·  ·  ·  in which the intermittently-driving members slide along approximately radial guides while rotating with one of the rotary members
 F16H 29/20
·  the intermittently-acting members being shaped as worms, screws, or racks
 F16H 29/22
·  with automatic speed change
 F16H 31/00
Other gearings with freewheeling members or other intermittently-driving members (F16H 21/00, F16H 23/00, F16H 25/00 take precedence; gearings involving the use of automatic changing-mechanisms, e.g. cyclically-actuated reversal gearings, see the appropriate groups)
   
 F16H 33/00
Gearings based on repeated accumulation and delivery of energy
 F16H 33/02
·  Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
 F16H 33/04
·  ·  Gearings for conveying rotary motion with variable velocity ratio, in which self-regulation is sought
 F16H 33/06
·  ·  ·  based essentially on spring action (ratchet slip couplings F16D 7/04)
 F16H 33/08
·  ·  ·  based essentially on inertia
 F16H 33/10
·  ·  ·  ·  with gyroscopic action, e.g. comprising wobble-plates, oblique cranks
 F16H 33/12
·  ·  ·  ·  with a driving member connected differentially with both a driven member and an oscillatory member with large resistance to movement, e.g. Constantinesco gearing
 F16H 33/14
·  ·  ·  ·  having orbital members influenced by regulating masses
 F16H 33/16
·  ·  ·  ·  ·  which have their own free motion, or consist of fluid
 F16H 33/18
·  ·  ·  ·  ·  of which the motion is constrained
 F16H 33/20
·  for interconversion, based essentially on inertia, of rotary motion and reciprocating or oscillating motion
 F16H 35/00
Gearings or mechanisms with other special functional features
 F16H 35/02
·  for conveying rotary motion with cyclically-varying velocity ratio (speed-changing mechanisms operating cyclically, see the appropriate groups)
 F16H 35/06
·  Gearings designed to allow relative movement between supports thereof without ill effects (F16H 1/26, F16H 1/48 take precedence)
 F16H 35/08
·  for adjustment of members on moving parts from a stationary place
 F16H 35/10
·  Arrangements or devices for absorbing overload or preventing damage by overload (couplings for transmitting rotation F16D)
 F16H 35/12
·  Transmitting mechanisms with delayed effect (vibration- or shock-dampers in general F16F)
 F16H 35/14
·  Mechanisms with only two stable positions, e.g. acting at definite angular positions
 F16H 35/16
·  Mechanisms for movements or movement relations conforming to mathematical formulae (devices in which computing operations are performed mechanically G06G 3/00)
 F16H 35/18
·  Turning devices for rotatable members, e.g. shafts (starting devices for internal-combustion engines F02N)
 F16H 37/00
Combinations of mechanical gearings, not hereinbefore provided for (applications of underdrives or overdrives in motor vehicles, combinations with differential gearings in motor vehicles B60K)
 F16H 37/02
·  comprising essentially only toothed or friction gearings
 F16H 37/04
·  ·  Combinations of toothed gearings only (F16H 37/06 takes precedence)
 F16H 37/06
·  ·  with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
 F16H 37/08
·  ·  ·  with differential gearing
 F16H 37/10
·  ·  ·  ·  at both ends of intermediate shafts
 F16H 37/12
·  Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these three types (F16H 21/14, F16H 21/28, F16H 21/30 take precedence; toothed or friction gearing or cam gearing, with only an additional lever or link, see the appropriate group for the main gearing)
 F16H 37/14
·  ·  the movements of two or more independently-moving members being combined into a single movement
 F16H 37/16
·  ·  with a driving or driven member which both rotates or oscillates on its axis and reciprocates
 F16H 39/00 - 
F16H 47/00
Fluid gearing (fluid actuators F15B; couplings or clutches with a fluid or semifluid as power-transmitting means F16D 31/00-F16D 39/00; fluid-resistance brakes F16D 57/00)  [3]
 F16H 39/00
Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution (control of exclusively fluid gearing F16H 61/38; application to lifting or pushing equipment B66F)  [5]
 F16H 39/01
·  Pneumatic gearing; Gearing working with subatmospheric pressure (pneumatic hammers B25D 9/00)  [2]
 F16H 39/02
·  with liquid motors at a distance from liquid pumps
 F16H 39/04
·  with liquid motor and pump combined in one unit
 F16H 39/06
·  ·  pump and motor being of the same type
 F16H 39/08
·  ·  ·  each with one main shaft and provided with pistons reciprocating in cylinders
 F16H 39/10
·  ·  ·  ·  with cylinders arranged around, and parallel or approximately parallel to, the main axis of the gearing
 F16H 39/12
·  ·  ·  ·  ·  with stationary cylinders
 F16H 39/14
·  ·  ·  ·  ·  with cylinders carried in rotary cylinder blocks or cylinder-bearing members
 F16H 39/16
·  ·  ·  ·  with cylinders arranged perpendicular to the main axis of the gearing
 F16H 39/18
·  ·  ·  ·  ·  the connections of the pistons being at the outer ends of the cylinders
 F16H 39/20
·  ·  ·  ·  ·  the connections of the pistons being at the inner ends of the cylinders
 F16H 39/22
·  ·  ·  with liquid chambers shaped as bodies of revolution concentric with the main axis of the gearing
 F16H 39/24
·  ·  ·  ·  with rotary displacement members, e.g. provided with axially or radially movable vanes passing movable sealing members
 F16H 39/26
·  ·  ·  with liquid chambers not shaped as bodies of revolution or shaped as bodies of revolution eccentric to the main axis of the gearing
 F16H 39/28
·  ·  ·  ·  with liquid chambers formed in rotary members
 F16H 39/30
·  ·  ·  ·  with liquid chambers formed in stationary members
 F16H 39/32
·  ·  ·  ·  ·  with sliding vanes carried by the rotor
 F16H 39/34
·  ·  ·  in which a rotor on one shaft co-operates with a rotor on another shaft
 F16H 39/36
·  ·  ·  ·  toothed-gear type
 F16H 39/38
·  ·  ·  ·  Displacement screw-pump type
 F16H 39/40
·  ·  ·  Hydraulic differential gearings, e.g. having a rotary input housing with interconnected liquid chambers for both outputs
 F16H 39/42
·  ·  pump and motor being of different types
 F16H 41/00
Rotary fluid gearing of the hydrokinetic type (control of exclusively fluid gearing F16H 61/38)  [5]
 F16H 41/02
·  with pump and turbine connected by conduits or ducts
 F16H 41/04
·  Combined pump-turbine units
 F16H 41/22
·  ·  Gearing systems consisting of a plurality of hydrokinetic units operating alternatively, e.g. made effective or ineffective by filling or emptying or by mechanical clutches
 F16H 41/24
·  Details
 F16H 41/26
·  ·  Shape of runner blades or channels with respect to function
 F16H 41/28
·  ·  with respect to manufacture, e.g. blade attachment
 F16H 41/30
·  ·  relating to venting, lubrication, cooling, circulation of the cooling medium
 F16H 41/32
·  Selection of working fluids (chemical aspects, see the relevant classes)
 F16H 43/00
Other fluid gearing, e.g. with oscillating input or output  [2]
 F16H 43/02
·  Fluid gearing actuated by pressure waves  [2]
 F16H 45/00
Combinations of fluid gearings for conveying rotary motion with couplings or clutches (F16H 41/22 takes precedence; conjoint control of clutch and gearing B60K 41/22)  [2]
 F16H 45/00

Note(s)

Clutches for varying working conditions in fluid torque-converters are regarded as a part of the latter.

 F16H 45/02
·  with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H 61/14)
 F16H 47/00
Combinations of mechanical gearing with fluid clutches or fluid gearing (conjoint control of clutch and gearing B60K 41/22)  [2]
 F16H 47/02
·  the fluid gearing being of the volumetric type
 F16H 47/04
·  ·  the mechanical gearing being of the type with members having orbital motion
 F16H 47/06
·  the fluid gearing being of the hydrokinetic type
 F16H 47/07
·  ·  using two or more power-transmitting fluid circuits (F16H 47/10 takes precedence)  [2]
 F16H 47/08
·  ·  the mechanical gearing being of the type with members having orbital motion
 F16H 47/10
·  ·  ·  using two or more power-transmitting fluid circuits  [2]
 F16H 47/12
·  ·  ·  the members with orbital motion having vanes interacting with the fluid  [2]
   
 F16H 48/00
Differential gearings  [6]
 F16H 48/02 - 
F16H 48/30

Note(s)

In this group, documents relating to transfer gears are classified both in group F16H 48/02 or F16H 48/04 and in groups F16H 48/06-F16H 48/30.  [6]

 F16H 48/02
·  Transfer gears for influencing drive between outputs  [6]
 F16H 48/04
·  ·  having unequal torque transfer between two outputs  [6]
 F16H 48/06 - 
F16H 48/30

Note(s)

  1. In groups F16H 48/06-F16H 48/30, for classification purposes only and in the absence of an indication to the contrary, classification is made in the last appropriate place.  [6]
  2. In groups F16H 48/06-F16H 48/30, it is desirable to add the indexing codes relating to constructional features of differential gearings. The indexing codes, which are chosen from those groups, have the same numbers as the classification symbols, but a colon is used instead of the oblique stroke, and should be unlinked.  [6]
  3. Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code.  [6]
 F16H 48/06
·  with gears having orbital motion  [6]
 F16H 48/08
·  ·  with orbital conical gears  [6]
 F16H 48/10
·  ·  with orbital spur gears  [6]
 F16H 48/12
·  without gears having orbital motion  [6]
 F16H 48/14
·  ·  with cams  [6]
 F16H 48/16
·  ·  with freewheels  [6]
 F16H 48/18
·  ·  with fluid gearing  [6]
 F16H 48/20
·  Arrangements for suppressing or influencing the differential action, e.g. locking devices  [6]
 F16H 48/22
·  ·  using friction clutches or brakes  [6]
 F16H 48/24
·  ·  using positive clutches or brakes  [6]
 F16H 48/26
·  ·  using fluid action, e.g. viscous clutches  [6]
 F16H 48/28
·  ·  using self-locking gears  [6]
 F16H 48/30
·  ·  using externally-actuatable locking devices  [6]
 F16H 49/00
Other gearing
 F16H 51/00 - 
F16H 57/00
Details of gearing or mechanisms (of screw-and-nut gearing F16H 25/00; of fluid gearing F16H 39/00-F16H 43/00; shafts, Bowden mechanisms, cranks, eccentrics, bearings, pivotal connections, crossheads, connecting-rods F16C; chains, belts F16G; piston-rods F16J 7/00)
 F16H 51/00
Levers (manipulating levers G05G)
 F16H 51/02
·  adjustable
 F16H 53/00
Cams; Non-rotary cams; Cam-followers, e.g. rollers (cams specially adapted for reciprocating-piston liquid engines F03C 1/30)
 F16H 53/02
·  Single-track cams for single-revolution cycles; Camshafts with such cams
 F16H 53/04
·  ·  Adjustable cams
 F16H 53/06
·  Cam-followers (F16H 53/08 takes precedence)
 F16H 53/08
·  Multi-track cams, e.g. for cycles consisting of several revolutions; Cam-followers specially adapted for such cams
 F16H 55/00
Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves (pulley-blocks for lifting or hauling appliances B66D 3/04)  [4]
 F16H 55/02
·  Toothed members; Worms
 F16H 55/06
·  ·  Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties  [3]
 F16H 55/08
·  ·  Profiling  [3]
 F16H 55/10
·  ·  Constructively simple tooth shapes, e.g. shaped as pins, as balls  [3]
 F16H 55/12
·  ·  with body or rim assembled out of detachable parts  [3]
 F16H 55/14
·  ·  Construction providing resilience or vibration-damping (F16H 55/06 takes precedence; resilient coupling of wheel or wheel-rim with shaft F16D 3/50, F16D 3/80)  [3]
 F16H 55/16
·  ·  ·  relating to teeth only  [3]
 F16H 55/17
·  ·  Toothed wheels (worm wheels F16H 55/22; chain wheels F16H 55/30)  [3]
 F16H 55/18
·  ·  ·  Special devices for taking-up backlash
 F16H 55/20
·  ·  ·  ·  for bevel gears
 F16H 55/22
·  ·  for transmissions with crossing shafts, especially worms, worm-gears (bevel gears, crown wheels, helical gears F16H 55/17)
 F16H 55/24
·  ·  ·  Special devices for taking up backlash
 F16H 55/26
·  ·  Racks
 F16H 55/28
·  ·  ·  Special devices for taking up backlash
 F16H 55/30
·  ·  Chain wheels (specially adapted for cycles B62M)
 F16H 55/32
·  Friction members (friction surfaces F16D 69/00)
 F16H 55/34
·  ·  Non-adjustable friction discs
 F16H 55/36
·  ·  Pulleys (with features essential for adjustment F16H 55/52)
 F16H 55/38
·  ·  ·  Means or measures for increasing adhesion (in general F16D 69/00)
 F16H 55/40
·  ·  ·  with spokes (F16H 55/48 takes precedence)
 F16H 55/42
·  ·  ·  Laminated pulleys
 F16H 55/44
·  ·  ·  Sheet-metal pulleys
 F16H 55/46
·  ·  ·  Split pulleys
 F16H 55/48
·  ·  ·  manufactured exclusively or in part of non-metallic material, e.g. plastics (F16H 55/38, F16H 55/42, F16H 55/46 take precedence)
 F16H 55/49
·  ·  ·  Features essential to V-belt pulleys  [2]
 F16H 55/50
·  ·  ·  Features essential to rope pulleys
 F16H 55/52
·  ·  Pulleys or friction discs of adjustable construction
 F16H 55/54
·  ·  ·  of which the bearing parts are radially adjustable
 F16H 55/56
·  ·  ·  of which the bearing parts are relatively axially adjustable
 F16H 57/00
General details of gearing
 F16H 57/02
·  Gear-boxes; Mounting gearing therein
 F16H 57/04
·  Features relating to lubrication or cooling
 F16H 57/05
·  ·  of chains (for conveyers B65G 45/08)
 F16H 57/08
·  of gearings with members having orbital motion
 F16H 57/10
·  ·  Braking arrangements
 F16H 57/12
·  Arrangements for adjusting or for taking-up backlash not provided for elsewhere  [2]
 F16H 59/00 - 
F16H 63/00
Control of gearing conveying rotary motion (orbital toothed gearings with a secondary drive in order to vary the speed continuously F16H 3/72; varying the speed ratio of driving or feeding mechanisms of machine tools B23Q 5/12, B23Q 5/46; conjoint control of drive units for vehicles B60K 41/00; cycle transmissions B62M; marine propulsion B63H)  [5]
 F16H 59/00 - 
F16H 63/00

Note(s)

  1. Attention is drawn to the Notes following group B60K 41/00.  [5]
  2. In groups F16H 59/00-F16H 63/00, clutches positioned within a gearbox are considered as comprising part of the gearings.  [5]
  3. In groups F16H 59/00-F16H 63/00, the following terms or expressions are used with the meaning indicated:
    • "final output element" means the final element which is moved to establish a gear ratio, i.e. which achieves the linking between two power transmission means, e.g. reverse idler gear, gear cluster, coupling sleeve, apply piston of a hydraulic clutch;
    • "mechanism" means a kinematic chain consisting either of a single element or alternatively of a series of elements, the position of each point on the kinematic chain being derivable from the position of any other point on the chain, and therefore, for a given position of a point on one of the elements forming the kinematic chain there is only one position for each of the other points on the element or series of elements forming the kinematic chain;
    • "final output mechanism" means the mechanism which includes the final output element;
    • "actuating mechanism" means the mechanism, the movement of which causes the movement of another mechanism by being in mutual contact;
    • "final actuating mechanism" means the mechanism actuating the final output mechanism.  [5]
  4. Combinations of features individually covered by group F16H 61/00 and one or both of groups F16H 59/00 and F16H 63/00 are classified in group F16H 61/00.  [5]
  5. Combinations of features individually covered by groups F16H 59/00 and F16H 63/00 are classified in group F16H 63/00.  [5]
  6. In groups F16H 59/00-F16H 63/00, it is desirable to add the indexing codes relating to control inputs or outputs. The indexing codes, which are chosen from groups F16H 59/00 or F16H 63/00, have the same numbers as the classification symbols, but a colon is used instead of the oblique stroke, and should be unlinked.  [5]
  7. In groups F16H 59/00-F16H 63/00, it is desirable to add the indexing codes of groups F16H 101/00-F16H 109/00. The indexing codes should be unlinked[7]
  8. Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code.  [6]
 F16H 59/00
Control inputs to change-speed- or reversing-gearings for conveying rotary motion  [5]
 F16H 59/02
·  Selector apparatus  [5]
 F16H 59/04
·  ·  Ratio selector apparatus  [5]
 F16H 59/06
·  ·  ·  the ratio being infinitely variable  [5]
 F16H 59/08
·  ·  Range selector apparatus  [5]
 F16H 59/10
·  ·  ·  comprising levers  [5]
 F16H 59/12
·  ·  ·  comprising push button devices  [5]
 F16H 59/14
·  Inputs being a function of torque or torque demand  [5]
 F16H 59/16
·  ·  Dynamometric measurement of torque  [5]
 F16H 59/18
·  ·  dependent on the position of the accelerator pedal  [5]
 F16H 59/20
·  ·  ·  Kickdown  [5]
 F16H 59/22
·  ·  ·  Idle position  [5]
 F16H 59/24
·  ·  dependent on the throttle opening  [5]
 F16H 59/26
·  ·  dependent on pressure  [5]
 F16H 59/28
·  ·  ·  Gasifier pressure in gas turbines  [5]
 F16H 59/30
·  ·  ·  Intake manifold vacuum  [5]
 F16H 59/32
·  ·  ·  Supercharger pressure in internal combustion engines  [5]
 F16H 59/34
·  ·  dependent on fuel feed  [5]
 F16H 59/36
·  Inputs being a function of speed  [5]
 F16H 59/38
·  ·  of gearing elements  [5]
 F16H 59/40
·  ·  ·  Output shaft speed  [5]
 F16H 59/42
·  ·  ·  Input shaft speed  [5]
 F16H 59/44
·  ·  dependent on machine speed (F16H 59/46 takes precedence)  [5]
 F16H 59/46
·  ·  dependent on a comparison between speeds  [5]
 F16H 59/48
·  Inputs being a function of acceleration  [5]
 F16H 59/50
·  Inputs being a function of the status of the machine, e.g. position of doors or safety belts  [5]
 F16H 59/52
·  ·  dependent on the weight of the machine, e.g. change in weight resulting from passengers boarding a bus  [5]
 F16H 59/54
·  ·  dependent on signals from the brakes, e.g. parking brakes  [5]
 F16H 59/56
·  ·  dependent on signals from the main clutch  [5]
 F16H 59/58
·  ·  dependent on signals from the steering  [5]
 F16H 59/60
·  Inputs being a function of ambient conditions  [5]
 F16H 59/62
·  ·  Atmospheric pressure  [5]
 F16H 59/64
·  ·  Atmospheric temperature  [5]
 F16H 59/66
·  ·  Road conditions, e.g. slope, slippery  [5]
 F16H 59/68
·  Inputs being a function of gearing status  [5]
 F16H 59/70
·  ·  dependent on the ratio established  [5]
 F16H 59/72
·  ·  dependent on oil characteristics, e.g. temperature, viscosity  [5]
 F16H 59/74
·  Inputs being a function of engine parameters (F16H 59/14 takes precedence)  [5]
 F16H 59/76
·  ·  Number of cylinders operating  [5]
 F16H 59/78
·  ·  Temperature  [5]
 F16H 61/00
Control functions within change-speed- or reversing-gearings for conveying rotary motion  [5]
 F16H 61/02
·  characterised by the signals used  [5]
 F16H 61/04
·  Smoothing ratio shift  [5]
 F16H 61/06
·  ·  by controlling rate of change of fluid pressure  [5]
 F16H 61/08
·  ·  Timing control  [5]
 F16H 61/10
·  Regulating shift hysteresis  [5]
 F16H 61/12
·  Detecting malfunction or potential malfunction, e.g. fail safe  [5]
 F16H 61/14
·  Control of torque converter lock-up clutches  [5]
 F16H 61/16
·  Inhibiting shift during unfavourable conditions (F16H 61/18 takes precedence)  [5]
 F16H 61/18
·  Preventing unintentional or unsafe shift (constructional features of the final output mechanisms F16H 63/30)  [5]
 F16H 61/20
·  Preventing gear creeping  [5]
 F16H 61/21
·  Providing engine brake control  [7]
 F16H 61/22
·  Locking (F16H 63/34 takes precedence)  [5]
 F16H 61/24
·  Providing feel, e.g. to enable selection  [5]
 F16H 61/26
·  Generation or transmission of movements for final actuating mechanisms  [5]
 F16H 61/26

Note(s)

  1. The generation or transmission of movements comprising only the selector apparatus, is classified in group F16H 59/00.  [5]
  2. The generation or transmission of movements, when part of the final output mechanisms, is classified in group F16H 63/00.  [5]
 F16H 61/28
·  ·  with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted  [5]
 F16H 61/30
·  ·  ·  Hydraulic motors therefor  [5]
 F16H 61/32
·  ·  ·  Electric motors therefor  [5]
 F16H 61/34
·  ·  comprising two mechanisms, one for the preselection movement, and one for the shifting movement (F16H 61/36 takes precedence)  [5]
 F16H 61/36
·  ·  with at least one movement being transmitted by a cable  [5]
 F16H 61/38
·  Control of exclusively fluid gearing  [5]
 F16H 61/40
·  ·  hydrostatic (involving modification of the gearing F16H 39/02, F16H 39/04)  [5]
 F16H 61/42
·  ·  ·  involving adjustment of a pump or motor with adjustable output or capacity  [5]
 F16H 61/44
·  ·  ·  by varying the number of pump or motor units in operation  [5]
 F16H 61/46
·  ·  ·  Automatic regulation in accordance with output requirements (servomotors G05B)  [5]
 F16H 61/48
·  ·  hydrodynamic  [5]
 F16H 61/50
·  ·  ·  controlled by changing the flow, force, or reaction of the liquid in the working circuit, while maintaining a completely filled working circuit  [5]
 F16H 61/52
·  ·  ·  ·  by altering the position of blades  [5]
 F16H 61/54
·  ·  ·  ·  ·  by means of axially-shiftable blade runners  [5]
 F16H 61/56
·  ·  ·  ·  ·  to change the blade angle  [5]
 F16H 61/58
·  ·  ·  ·  by change of the mechanical connection of, or between, the runners  [5]
 F16H 61/60
·  ·  ·  ·  ·  exclusively by the use of freewheel clutches  [5]
 F16H 61/62
·  ·  ·  ·  ·  involving use of a speed-changing gearing or of a clutch in the connection between runners (F16H 45/02, F16H 61/60 take precedence)  [5]
 F16H 61/64
·  ·  ·  controlled by changing the amount of liquid in the working circuit  [5]
 F16H 63/00
Control outputs to change-speed- or reversing-gearings for conveying rotary motion  [5]
 F16H 63/02
·  Final output mechanisms therefor; Actuating means for the final output mechanisms  [5]
 F16H 63/04
·  ·  a single final output mechanism being moved by a single final actuating mechanism  [5]
 F16H 63/06
·  ·  ·  the final output mechanism having an indefinite number of positions  [5]
 F16H 63/08
·  ·  Multiple final output mechanisms being moved by a single common final actuating mechanism  [5]
 F16H 63/10
·  ·  ·  the final actuating mechanism having a series of independent ways of movement, each way of movement being associated with only one final output mechanism  [5]
 F16H 63/12
·  ·  ·  ·  two or more ways of movement occurring simultaneously  [5]
 F16H 63/14
·  ·  ·  the final output mechanisms being successively actuated by repeated movement of the final actuating mechanism  [5]
 F16H 63/16
·  ·  ·  the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism  [5]
 F16H 63/18
·  ·  ·  ·  the final actuating mechanism comprising cams  [5]
 F16H 63/20
·  ·  ·  with preselection and subsequent movement of each final output mechanism by movement of the final actuating mechanism in two different ways, e.g. guided by a shift gate  [5]
 F16H 63/22
·  ·  ·  ·  the final output mechanisms being simultaneously moved by the final actuating mechanism  [5]
 F16H 63/24
·  ·  each of the final output mechanisms being moved by only one of the various final actuating mechanisms  [5]
 F16H 63/26
·  ·  ·  some of the movements of the final output mechanisms being caused by another final output mechanism  [5]
 F16H 63/28
·  ·  two or more final actuating mechanisms moving the same final output mechanism  [5]
 F16H 63/30
·  ·  Constructional features of the final output mechanisms  [5]
 F16H 63/32
·  ·  ·  Gear shifter yokes  [5]
 F16H 63/34
·  ·  ·  Locking or disabling mechanisms  [5]
 F16H 63/36
·  ·  ·  ·  Interlocking devices  [5]
 F16H 63/38
·  ·  ·  Detents  [5]
 F16H 63/40
·  comprising signals other than signals for actuating the final output mechanisms  [5]
 F16H 63/42
·  ·  Ratio indicator devices  [5]
 F16H 63/44
·  ·  Signals to the control unit of auxiliary gearing  [5]
 F16H 63/46
·  ·  Signals to a clutch outside the gearbox  [5]
 F16H 63/48
·  ·  Signals to a parking brake  [5]
 F16H 63/50
·  ·  Signals to an engine or motor  [7]
 F16H 101/00 - 
F16H 109/00
Indexing scheme associated with groups F16H 59/00-F16H 63/00, relating to types of gearing controlled and to changing the number of driven wheels. The indexing codes should be unlinked.  [7]
 F16H 101/00 - 
F16H 109/00

Note(s)

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [7]

 F16H 101/00
Continuously variable gearing  [7]
 F16H 101/02
·  with endless flexible member  [7]
 F16H 101/04
·  Friction gearing  [7]
 F16H 103/00
Stepped gearing  [7]
 F16H 103/02
·  with interruption of drive  [7]
 F16H 103/10
·  without interruption of drive, e.g. powershift  [7]
 F16H 103/12
·  ·  with orbital gears  [7]
 F16H 103/14
·  ·  with two inputs, e.g. selection of one of two torque-flow paths by clutch  [7]
 F16H 105/00
Change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series, e.g. range- or overdrive-type gearing arrangements  [7]
 F16H 107/00
Differential or balance gearing  [7]
 F16H 109/00
Changing the number of driven wheels  [7]