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

Note(s)

In this sub-class

  • "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. Sets of rigidly-connected members are regarded as single members.

 F16H 1/00 - 
F16H 5/00
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 1/38
·  ·  Differential gearings
 F16H 1/40
·  ·  ·  comprising orbital conical gears
 F16H 1/42
·  ·  ·  comprising orbital spur gears
 F16H 1/44
·  ·  ·  with locking devices or other provisions for suppressing or influencing the differential action
 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 5/00)
 F16H 3/02
·  without gears having orbital motion
 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 3/10
·  ·  ·  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 5/00
Speed-changing or reversing mechanisms for toothed gearings conveying rotary motion (mechanisms adapted only for special gearings, see the relevant groups for those gearings; control devices in general G05)
 F16H 5/02
·  for non-automatic operation (mechanisms with preselection F16H 5/74)
 F16H 5/04
·  ·  actuated entirely mechanically
 F16H 5/06
·  ·  ·  specific for gearings without orbital gears
 F16H 5/08
·  ·  ·  ·  with gears that can be disengaged from their shafts
 F16H 5/10
·  ·  ·  specific for gearings with orbital gears
 F16H 5/12
·  ·  actuated by fluid pressure
 F16H 5/14
·  ·  ·  specific for gearings without orbital gears
 F16H 5/16
·  ·  ·  ·  with gears that can be disengaged from their shafts
 F16H 5/18
·  ·  ·  specific for gearings with orbital gears
 F16H 5/20
·  ·  actuated electrically
 F16H 5/22
·  ·  ·  specific for gearings without orbital gears
 F16H 5/24
·  ·  ·  ·  with gears that can be disengaged from their shafts
 F16H 5/26
·  ·  ·  specific for gearings with orbital gears
 F16H 5/28
·  ·  with essential mechanical and fluid-pressure and electrical features, or with essential features of at least two of these kinds
 F16H 5/30
·  ·  ·  specific for gearings without orbital gears
 F16H 5/32
·  ·  ·  ·  with gears that can be disengaged from their shafts
 F16H 5/34
·  ·  ·  specific for gearings with orbital gears
 F16H 5/36
·  ·  for additional actuation of an auxiliary gearing, a main clutch or one or more separating clutches
 F16H 5/38
·  ·  Means for indicating synchronisation of the gears to be engaged
 F16H 5/40
·  automatically controlled, e.g. by speed, torque, acceleration, temperature, atmospheric pressure which mechanisms may or may not actuated other transmission members (mechanisms with preselection F16H 5/74)
 F16H 5/42
·  ·  by speed
 F16H 5/44
·  ·  ·  actuated entirely mechanically
 F16H 5/46
·  ·  ·  ·  using centrifugal clutches for speed-changing (clutches F16D 43/00-F16D 43/18)
 F16H 5/48
·  ·  ·  actuated by fluid pressure
 F16H 5/50
·  ·  ·  actuated electrically
 F16H 5/52
·  ·  by torque, e.g. position of throttle valve of engine
 F16H 5/54
·  ·  ·  actuated entirely mechanically
 F16H 5/56
·  ·  ·  actuated by fluid pressure
 F16H 5/58
·  ·  ·  actuated electrically
 F16H 5/60
·  ·  by both speed and torque
 F16H 5/62
·  ·  ·  actuated entirely mechanically
 F16H 5/64
·  ·  ·  actuated by fluid pressure
 F16H 5/66
·  ·  ·  actuated electrically
 F16H 5/68
·  ·  specific for reversal
 F16H 5/70
·  ·  ·  cyclically actuated
 F16H 5/72
·  ·  ·  with change of velocity ratio on change in direction of the driving torque
 F16H 5/74
·  with preselection, automatic or non-automatic, which mechanisms may or may not actuate, or be actuated by, other transmission members
 F16H 5/76
·  ·  acting or actuated entirely mechanically
 F16H 5/78
·  ·  acting or actuated by fluid pressure
 F16H 5/80
·  ·  acting or actuated electrically
 F16H 5/82
·  ·  specific for automatic preselection (not specially adapted for gearings, see G05)
 F16H 5/84
·  ·  with blocking of the engagement as long as the elements that are to be engaged are not running synchronously
 F16H 7/00 - 
F16H 11/00
Gearing for conveying rotary motion by endless flexible members
 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 (speed-changing or reversing mechanisms F16H 11/00)
 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 or toothed belts; Chains specially adapted to such gearing
 F16H 9/26
·  with members having orbital motion
 F16H 11/00
Speed-changing or reversing mechanisms for gearings for conveying rotary motion by endless flexible members
 F16H 11/02
·  for infinitely-variable types
 F16H 11/04
·  ·  non-automatic
 F16H 11/06
·  ·  automatic
 F16H 11/08
·  for types with stepped variation of speed
 F16H 13/00 - 
F16H 17/00
Other friction gearing for conveying rotary motion
 F16H 13/00
Gearings for conveying rotary motion 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 (speed-changing or reversing mechanisms F16H 17/00)
 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 17/00
Speed-changing or reversing mechanisms for gearings for conveying rotary motion by friction between rotary members
 F16H 17/02
·  for infinitely-variable types
 F16H 17/04
·  ·  non-automatic
 F16H 17/06
·  ·  automatic
 F16H 17/08
·  for types with stepped variation of speed
 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 operating 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 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 (shaking, jolting, or vibratory apparatus B06B)
 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 35/04
·  Mechanical differential gearings without members having orbital motion (comprising freewheels only F16D 41/00)
 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, clutches 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
 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 49/00
Fluid gearing (fluid actuators F15B)
 F16H 39/00
Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution (application to lifting or pushing equipment B66F)
 F16H 39/02
·  the motors being at a distance from pumps
 F16H 39/04
·  with the 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 39/44
·  Control (involving modification of the gearing F16H 39/02-F16H 39/42)
 F16H 39/46
·  ·  involving adjustment of a pump or motor with adjustable output or capacity
 F16H 39/48
·  ·  by varying the number of pump or motor units in operation
 F16H 39/50
·  ·  Automatic regulation in accordance with output requirements (servomotors G05B)
 F16H 39/52
·  ·  ·  for use in drives for winding or unwinding mechanisms for tapes, threads, or wire
 F16H 41/00
Rotary fluid gearing of the hydrokinetic type
 F16H 41/02
·  with pump and turbine connected by conduits or ducts
 F16H 41/04
·  Combined pump-turbine units
 F16H 41/06
·  ·  controlled by changing the flow, force, or reaction of the liquid in the working circuit, while maintaining a completely filled working circuit
 F16H 41/08
·  ·  ·  by altering the position of blades
 F16H 41/10
·  ·  ·  ·  by means of axially-shiftable blade runners
 F16H 41/12
·  ·  ·  ·  to change the blade angle
 F16H 41/14
·  ·  ·  by change of the mechanical connection of or between the runners
 F16H 41/16
·  ·  ·  ·  exclusively by the use of freewheel clutches
 F16H 41/18
·  ·  ·  ·  involving use of a speed-changing gearing or of a clutch in the connection between runners (F16H 41/16, F16H 45/02 take precedence)
 F16H 41/20
·  ·  controlled by changing the amount of liquid in the working circuit
 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
 F16H 45/00
Combinations of fluid gearings for conveying rotary motion with couplings or clutches (F16H 41/22 takes precedence)
 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
 F16H 47/00
Combinations of mechanical gearing with fluid gearing
 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 47/08
·  ·  the mechanical gearing being of the type with members having orbital motion
 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
 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 B66D 3/04)
 F16H 55/02
·  Toothed members; Worms
 F16H 55/04
·  ·  Toothed wheels (worm wheels F16H 55/22; chain wheels F16H 55/30)
 F16H 55/06
·  ·  ·  Uses of materials or of treatments of material
 F16H 55/08
·  ·  ·  Profiling
 F16H 55/10
·  ·  ·  Constructively simple tooth shapes, e.g. shaped as pins, as balls
 F16H 55/12
·  ·  ·  with body or rim assembled out of detachable parts
 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)
 F16H 55/16
·  ·  ·  ·  relating to teeth only
 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 55/04)
 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 wood or other non-metallic material (F16H 55/38, F16H 55/42, F16H 55/46 take precedence)
 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 45/02)
 F16H 57/06
·  Means for preventing the actuation of speed-changing or reversing mechanism in unfavourable conditions
 F16H 57/08
·  of gearings with members having orbital motion
 F16H 57/10
·  ·  Braking arrangements