|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

|  | F01 - F04 |
Subsection index
MACHINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F04C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F04B
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
ENGINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F03C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F03C
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
PUMPS |
positive displacement |
rotary or oscillating piston | F04C
reciprocating piston or other | F04B
non-positive displacement | F04D

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 |
4. Note(s) Combinations including mechanical gearings are classified in groups Fulltext... Hierarchy... Expanded...F16H 37/00or Fulltext... Hierarchy... Expanded...F16H 47/00, unless they are provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 1/00-F16H 35/00. [2009.01] In this subclass, sets of rigidly-connected members are regarded as single members. In this subclass, the following terms or expressions are used with 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 or 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. Attention is drawn to the following places:
   Fulltext... Hierarchy... Expanded...A01D 69/00 | Gearings in harvesters or mowers |
   Fulltext... Hierarchy... Expanded...A63H 31/00 | Gearing for toys |
   Fulltext... Hierarchy... Expanded...B21B 35/00 | Toothed-wheel gearing for metal-rolling mills |
   Fulltext... Hierarchy... Expanded...B60K | Arrangement of transmissions in vehicles |
   Fulltext... Hierarchy... Expanded...B61C 9/00 | Transmissions for railway locomotives |
   Fulltext... Hierarchy... Expanded...B62D 3/00 | Vehicle steering gears |
   Fulltext... Hierarchy... Expanded...B62M | Transmissions for cycles |
   Fulltext... Hierarchy... Expanded...B63H 23/00 | Transmissions for marine propulsion |
   Fulltext... Hierarchy... Expanded...B63H 25/00 | Marine steering gears |
   Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01-F04 | Machines, engines, pumps |
   Fulltext... Hierarchy... Expanded...F15B 15/00 | Gearings associated with fluid-actuated devices |
   Fulltext... Hierarchy... Expanded...G01D 5/02 | Gearing used in indicating or recording apparatus in connection with measuring devices |
   Fulltext... Hierarchy... Expanded...H03J 1/00 | Driving arrangements for tuning resonant circuits |
   Fulltext... Hierarchy... Expanded...H04L 13/02 | Driving 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

P:240 |  | F16H 1/00 |
Toothed gearings for conveying rotary motion (specific for conveying rotary motion with variable gear ratio or for reversing rotary motion Fulltext... Hierarchy... Expanded...F16H 3/00)

|  | F16H 1/02 |
· | without gears having orbital motion

|  | F16H 1/04 |
· · | involving only two intermeshing members

|  | F16H 1/28 |
· | with gears having orbital motion

|  | F16H 1/32 |
· · | in which the central axis of the gearing lies inside the periphery of an orbital gear

P:220 |  | F16H 3/00 |
Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion (speed-changing or reversing mechanisms Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 59/00-F16H 63/00)

|  | F16H 3/02 |
· | without gears having orbital motion

|  | F16H 3/08 |
· · | exclusively or essentially with continuously- meshing gears, that can be disengaged from their shafts

|  | F16H 3/08 |
Note(s) In this group, gears which can be put out of mesh are not taken into consideration if they are used for reversal only. [8]

|  | F16H 3/44 |
· | using gears having orbital motion

|  | F16H 7/00 - F16H 9/00 |
Gearing for conveying rotary motion by endless flexible members

P:190 |  | 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 Fulltext... Hierarchy... Expanded...F16H 9/00; endless flexible members per se, e.g. belts or chains Fulltext... Hierarchy... Expanded...F16G)

|  | F16H 7/02 |
· | with belts; with V-belts

|  | F16H 7/08 |
· | Means for varying tension of belts, ropes, or chains (pulleys of adjustable construction Fulltext... Hierarchy... Expanded...F16H 55/32)

|  | F16H 7/10 |
· · | by adjusting the axis of a pulley

|  | F16H 7/12 |
· · · | of an idle pulley

P:180 |  | 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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 59/00-F16H 63/00; endless flexible members per se, e.g. belts or chains Fulltext... Hierarchy... Expanded...F16G)

|  | F16H 9/02 |
· | without members having orbital motion

|  | F16H 9/26 |
· | with members having orbital motion

|  | F16H 13/00 - F16H 15/00 |
Other friction gearing for conveying rotary motion

P:210 |  | 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 Fulltext... Hierarchy... Expanded...F16H 15/00)

P:200 |  | 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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 59/00-F16H 63/00)

|  | 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 15/16 |
· · · · | in which the member B has a conical friction surface

|  | F16H 15/26 |
· · · · | in which the member B has a spherical friction surface centered on its axis of revolution

|  | 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

P:170 |  | 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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 27/00-F16H 31/00; rope or like tackle for lifting or haulage Fulltext... Hierarchy... Expanded...B66D 3/00)

|  | F16H 21/00 - F16H 25/00 |
Gearing for conveying or converting motion by means of levers, links, cams or screw-and-nut mechanisms

P:130 |  | F16H 21/00 |
Gearings comprising primarily only links or levers, with or without slides (Fulltext... Hierarchy... Expanded...F16H 23/00 takes precedence)

P:110 |  | F16H 23/00 |
Wobble-plate gearings; Oblique-crank gearings

P:120 |  | F16H 25/00 |
Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms

|  | F16H 25/18 |
· | for conveying or interconverting oscillating or reciprocating motions

|  | F16H 25/20 |
· · | Screw mechanisms (with automatic reversal Fulltext... Hierarchy... Expanded...F16H 25/00)

|  | 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 (Fulltext... Hierarchy... Expanded...F16H 25/22 takes precedence)

|  | F16H 27/00 - F16H 31/00 |
Gearings with intermittently-driving members

P:140 |  | F16H 27/00 |
Step-by-step mechanisms without freewheel members, e.g. Geneva drives (rotary gearings with cyclically-varying velocity ratio Fulltext... Hierarchy... Expanded...F16H 35/00; impulse couplings Fulltext... Hierarchy... Expanded...F16D 5/00; clockwork escapements Fulltext... Hierarchy... Expanded...G04B 15/00)

P:150 |  | F16H 29/00 |
Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action (freewheels Fulltext... Hierarchy... Expanded...F16D 41/00)

P:160 |  | F16H 31/00 |
Other gearings with freewheeling members or other intermittently-driving members (Fulltext... Hierarchy... Expanded...F16H 21/00, Fulltext... Hierarchy... Expanded...F16H 23/00, Fulltext... Hierarchy... Expanded...F16H 25/00 take precedence; gearings involving the use of automatic changing-mechanisms, e.g. cyclically-actuated reversal gearings, see the appropriate groups)

P:90 |  | F16H 33/00 |
Gearings based on repeated accumulation and delivery of energy

P:30 |  | F16H 35/00 |
Gearings or mechanisms with other special functional features

P:100 |  | F16H 37/00 |
Combinations of mechanical gearings, not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 1/00-F16H 35/00 (combinations of mechanical gearing with fluid clutches or fluid gearing Fulltext... Hierarchy... Expanded...F16H 47/00; applications of underdrives or overdrives in motor vehicles, combinations with differential gearings in motor vehicles Fulltext... Hierarchy... Expanded...B60K)

|  | F16H 37/02 |
· | comprising essentially only toothed or friction gearings

|  | F16H 37/06 |
· · | with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts

|  | F16H 39/00 - F16H 47/00 |
Fluid gearing [3]

P:60 |  | 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 Fulltext... Hierarchy... Expanded...F16H 61/38; fluid couplings or clutches with pumping sets of volumetric type Fulltext... Hierarchy... Expanded...F16D 31/00; application to lifting or pushing equipment Fulltext... Hierarchy... Expanded...B66F) [5]

P:70 |  | F16H 41/00 |
Rotary fluid gearing of the hydrokinetic type (control of exclusively fluid gearing Fulltext... Hierarchy... Expanded...F16H 61/38; rotary fluid couplings or clutches of the hydrokinetic type Fulltext... Hierarchy... Expanded...F16D 33/00) [5]

P:80 |  | F16H 43/00 |
Other fluid gearing, e.g. with oscillating input or output [2]

P:50 |  | F16H 45/00 |
Combinations of fluid gearings for conveying rotary motion with couplings or clutches (Fulltext... Hierarchy... Expanded...F16H 41/00 takes precedence; conjoint control of driveline clutches and change-speed gearing in vehicles Fulltext... Hierarchy... Expanded...B60W 10/02, Fulltext... Hierarchy... Expanded...B60W 10/10) [2]

|  | F16H 45/00 |
Note(s) Clutches for varying working conditions in fluid torque-converters are regarded as a part of the latter.

P:40 |  | F16H 47/00 |
Combinations of mechanical gearing with fluid clutches or fluid gearing (conjoint control of driveline clutches and change-speed gearing in vehicles Fulltext... Hierarchy... Expanded...B60W 10/02, Fulltext... Hierarchy... Expanded...B60W 10/10) [2]

P:230 |  | F16H 48/00 |
Differential gearings [6]

P:250 |  | F16H 49/00 |
Other gearing

|  | F16H 51/00 - F16H 57/00 |
Details of gearing or mechanisms

P:280 |  | F16H 51/00 |
Levers of gearing mechanisms (shafts, Bowden mechanisms, cranks, eccentrics, bearings, pivotal connections, crossheads, connecting-rods Fulltext... Hierarchy... Expanded...F16C; manipulating levers Fulltext... Hierarchy... Expanded...G05G)

P:270 |  | F16H 53/00 |
Cams or cam-followers, e.g. rollers for gearing mechanisms (shafts, Bowden mechanisms, cranks, eccentrics, bearings, pivotal connections, crossheads, connecting-rods Fulltext... Hierarchy... Expanded...F16C; cams specially adapted for reciprocating-piston liquid engines Fulltext... Hierarchy... Expanded...F03C 1/00)

P:260 |  | F16H 55/00 |
Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms (of screw-and-nut gearing Fulltext... Hierarchy... Expanded...F16H 25/00; shafts, Bowden mechanisms, cranks, eccentrics, bearings, pivotal connections, crossheads, connecting-rods Fulltext... Hierarchy... Expanded...F16C; chains, belts Fulltext... Hierarchy... Expanded...F16G; pulley-blocks for lifting or hauling appliances Fulltext... Hierarchy... Expanded...B66D 3/00) [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 55/17 |
· · | Toothed wheels (worm wheels Fulltext... Hierarchy... Expanded...F16H 55/02; chain wheels Fulltext... Hierarchy... Expanded...F16H 55/02) [3]

|  | F16H 55/32 |
· | Friction members (friction surfaces Fulltext... Hierarchy... Expanded...F16D 69/00)

|  | F16H 55/36 |
· · | Pulleys (with features essential for adjustment Fulltext... Hierarchy... Expanded...F16H 55/32)

P:290 |  | F16H 57/00 |
General details of gearing (of fluid gearing Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 39/00-F16H 43/00; of screw-and-nut gearing Fulltext... Hierarchy... Expanded...F16H 25/00; shafts, Bowden mechanisms, cranks, eccentrics, bearings, pivotal connections, crossheads, connecting-rods Fulltext... Hierarchy... Expanded...F16C)

|  | F16H 57/02 |
· | Gear-boxes; Mounting gearing therein

|  | F16H 57/04 |
· | Features relating to lubrication or cooling

|  | F16H 57/05 |
· · | of chains (for conveyers Fulltext... Hierarchy... Expanded...B65G 45/00)

|  | F16H 59/00 - F16H 63/00 |
Control of gearing conveying rotary motion [5]

|  | F16H 59/00 - F16H 63/00 |
Note(s) Attention is drawn to the Notes following the title of subclass Fulltext... Hierarchy... Expanded...B60W. In groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 59/00-F16H 63/00, clutches positioned within a gearbox are considered as comprising part of the gearings. [5] In groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...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] Combinations of features individually covered by group Fulltext... Hierarchy... Expanded...F16H 61/00 and one or both of groups Fulltext... Hierarchy... Expanded...F16H 59/00 and Fulltext... Hierarchy... Expanded...F16H 63/00 are classified in group Fulltext... Hierarchy... Expanded...F16H 61/00. [5] Combinations of features individually covered by groups Fulltext... Hierarchy... Expanded...F16H 59/00 and Fulltext... Hierarchy... Expanded...F16H 63/00 are classified in group Fulltext... Hierarchy... Expanded...F16H 63/00. [5] When classifying in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 59/00-F16H 63/00, control inputs or types of gearing which are not identified by the classification according to Notes (4) and (5), and which are considered to represent information of interest for search, may also be classified. Such non-obligatory classification should be given as "additional information", e.g. selected from subgroup Fulltext... Hierarchy... Expanded...F16H 61/66 relating to the type of gearing controlled or from group Fulltext... Hierarchy... Expanded...F16H 59/00 relating to control inputs. [8]

P:20 |  | 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 59/08 |
· · | Range selector apparatus [5]

|  | F16H 59/10 |
· · · | comprising levers [5]

|  | F16H 59/14 |
· | Inputs being a function of torque or torque demand [5]

|  | F16H 59/18 |
· · | dependent on the position of the accelerator pedal [5]

|  | F16H 59/24 |
· · | dependent on the throttle opening [5]

|  | F16H 59/36 |
· | Inputs being a function of speed [5]

|  | F16H 59/38 |
· · | of gearing elements [5]

|  | F16H 59/42 |
· · · | Input shaft speed [5]

|  | F16H 59/44 |
· · | dependent on machine speed (Fulltext... Hierarchy... Expanded...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 59/60 |
· | Inputs being a function of ambient conditions [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]

P:0 |  | 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 (Fulltext... Hierarchy... Expanded...F16H 61/18 takes precedence) [5]

|  | F16H 61/18 |
· | Preventing unintentional or unsafe shift (constructional features of the final output mechanisms Fulltext... Hierarchy... Expanded...F16H 63/30) [5]

|  | F16H 61/20 |
· | Preventing gear creeping [5]

|  | F16H 61/21 |
· | Providing engine brake control [7]

|  | F16H 61/22 |
· | Locking (Fulltext... Hierarchy... Expanded...F16H 63/30 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) The generation or transmission of movements comprising only the selector apparatus, is classified in group Fulltext... Hierarchy... Expanded...F16H 59/00. [5] The generation or transmission of movements, when part of the final output mechanisms, is classified in group Fulltext... Hierarchy... Expanded...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 61/38 |
· | Control of exclusively fluid gearing [5]

|  | F16H 61/40 |
· · | hydrostatic (involving modification of the gearing Fulltext... Hierarchy... Expanded...F16H 39/00) [5]

|  | F16H 61/66 |
· | specially adapted for continuously variable gearings (Fulltext... Hierarchy... Expanded...F16H 61/38 takes precedence; orbital toothed gearings with a secondary drive in order to vary the speed continuously Fulltext... Hierarchy... Expanded...F16H 3/44) [8]

|  | F16H 61/68 |
· | specially adapted for stepped gearings [8]

|  | F16H 61/70 |
· | specially adapted for 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 [8]

P:10 |  | 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 63/08 |
· · | Multiple final output mechanisms being moved by a single common final actuating mechanism [5]

|  | F16H 63/30 |
· · | Constructional features of the final output mechanisms [5]