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IPC 7
  F16H 23/00 - F16H 39/42  
F16H04100-F16H05978
  F16H 61/00 - F16H 109:00  

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING


F 16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL


F 16 HGEARING


41/

00Rotary fluid gearing of the hydrokinetic type (control of exclusively fluid gearing F16H 61/38) [5]

41/

02.with pump and turbine connected by conduits or ducts

41/

04.Combined pump-turbine units

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

41/

24.Details

41/

26..Shape of runner blades or channels with respect to function

41/

28..with respect to manufacture, e.g. blade attachment

41/

30..relating to venting, lubrication, cooling, circulation of the cooling medium

41/

32.Selection of working fluids (chemical aspects, see the relevant classes)


43/

00Other fluid gearing, e.g. with oscillating input or output  [2]

43/

02.Fluid gearing actuated by pressure waves  [2]


45/

00Combinations 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]

Note

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

45/

02.with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H 61/14)


47/

00Combinations of mechanical gearing with fluid clutches or fluid gearing (conjoint control of clutch and gearing B60K 41/22) [2]

47/

02.the fluid gearing being of the volumetric type

47/

04..the mechanical gearing being of the type with members having orbital motion

47/

06.the fluid gearing being of the hydrokinetic type

47/

07..using two or more power-transmitting fluid circuits (F16H 47/10 takes precedence)  [2]

47/

08..the mechanical gearing being of the type with members having orbital motion

47/

10...using two or more power-transmitting fluid circuits  [2]

47/

12...the members with orbital motion having vanes interacting with the fluid  [2]



48/

00Differential gearings  [6]

Note

 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 to F16H 48/30.  [6]

48/

02.Transfer gears for influencing drive between outputs  [6]

48/

04..having unequal torque transfer between two outputs  [6]

Notes

(1)In groups F16H 48/06 to 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 to 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]

48/

06.with gears having orbital motion  [6]

48/

08..with orbital conical gears  [6]

48/

10..with orbital spur gears  [6]

48/

12.without gears having orbital motion  [6]

48/

14..with cams  [6]

48/

16..with freewheels  [6]

48/

18..with fluid gearing  [6]

48/

20.Arrangements for suppressing or influencing the differential action, e.g. locking devices  [6]

48/

22..using friction clutches or brakes  [6]

48/

24..using positive clutches or brakes  [6]

48/

26..using fluid action, e.g. viscous clutches  [6]

48/

28..using self-locking gears  [6]

48/

30..using externally-actuatable locking devices  [6]


49/

00Other gearing


Details of gearing or mechanisms (of screw-and-nut gearing F16H 25/00; of fluid gearing F16H 39/00 to F16H 43/00; shafts, Bowden mechanisms, cranks, eccentrics, bearings, pivotal connections, crossheads, connecting-rods F16C; chains, belts F16G; piston-rods F16J 7/00)


51/

00Levers (manipulating levers G05G)

51/

02.adjustable


53/

00Cams; Non-rotary cams; Cam-followers, e.g. rollers (cams specially adapted for reciprocating-piston liquid engines F03C 1/30)

53/

02.Single-track cams for single-revolution cycles; Camshafts with such cams

53/

04..Adjustable cams

53/

06.Cam-followers (F16H 53/08 takes precedence)

53/

08.Multi-track cams, e.g. for cycles consisting of several revolutions; Cam-followers specially adapted for such cams


55/

00Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves (pulley-blocks for lifting or hauling appliances B66D 3/04) [4]

55/

02.Toothed members; Worms

55/

06..Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties  [3]

55/

08..Profiling  [3]

55/

10..Constructively simple tooth shapes, e.g. shaped as pins, as balls  [3]

55/

12..with body or rim assembled out of detachable parts  [3]

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]

55/

16...relating to teeth only  [3]

55/

17..Toothed wheels (worm wheels F16H 55/22; chain wheels F16H 55/30)  [3]

55/

18...Special devices for taking-up backlash

55/

20....for bevel gears

55/

22..for transmissions with crossing shafts, especially worms, worm-gears (bevel gears, crown wheels, helical gears F16H 55/17)

55/

24...Special devices for taking up backlash

55/

26..Racks

55/

28...Special devices for taking up backlash

55/

30..Chain wheels (specially adapted for cycles B62M)

55/

32.Friction members (friction surfaces F16D 69/00)

55/

34..Non-adjustable friction discs

55/

36..Pulleys (with features essential for adjustment F16H 55/52)

55/

38...Means or measures for increasing adhesion (in general F16D 69/00)

55/

40...with spokes (F16H 55/48 takes precedence)

55/

42...Laminated pulleys

55/

44...Sheet-metal pulleys

55/

46...Split pulleys

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)

55/

49...Features essential to V-belt pulleys  [2]

55/

50...Features essential to rope pulleys

55/

52..Pulleys or friction discs of adjustable construction

55/

54...of which the bearing parts are radially adjustable

55/

56...of which the bearing parts are relatively axially adjustable


57/

00General details of gearing

57/

02.Gear-boxes; Mounting gearing therein

57/

04.Features relating to lubrication or cooling

57/

05..of chains (for conveyers B65G 45/08)

57/

08.of gearings with members having orbital motion

57/

10..Braking arrangements

57/

12.Arrangements for adjusting or for taking-up backlash not provided for elsewhere  [2]


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]

Notes

(1)Attention is drawn to the Notes following group B60K 41/00.  [5]

(2)In groups F16H 59/00 to F16H 63/00, clutches positioned within a gearbox are considered as comprising part of the gearings.  [5]

(3)In groups F16H 59/00 to 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 to 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 to F16H 63/00, it is desirable to add the indexing codes of groups F16H 101:00 to 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]


59/

00Control inputs to change-speed- or reversing-gearings for conveying rotary motion  [5]

59/

02.Selector apparatus  [5]

59/

04..Ratio selector apparatus  [5]

59/

06...the ratio being infinitely variable  [5]

59/

08..Range selector apparatus  [5]

59/

10...comprising levers  [5]

59/

12...comprising push button devices  [5]

59/

14.Inputs being a function of torque or torque demand  [5]

59/

16..Dynamometric measurement of torque  [5]

59/

18..dependent on the position of the accelerator pedal  [5]

59/

20...Kickdown  [5]

59/

22...Idle position  [5]

59/

24..dependent on the throttle opening  [5]

59/

26..dependent on pressure  [5]

59/

28...Gasifier pressure in gas turbines  [5]

59/

30...Intake manifold vacuum  [5]

59/

32...Supercharger pressure in internal combustion engines  [5]

59/

34..dependent on fuel feed  [5]

59/

36.Inputs being a function of speed  [5]

59/

38..of gearing elements  [5]

59/

40...Output shaft speed  [5]

59/

42...Input shaft speed  [5]

59/

44..dependent on machine speed (F16H 59/46 takes precedence)  [5]

59/

46..dependent on a comparison between speeds  [5]

59/

48.Inputs being a function of acceleration  [5]

59/

50.Inputs being a function of the status of the machine, e.g. position of doors or safety belts  [5]

59/

52..dependent on the weight of the machine, e.g. change in weight resulting from passengers boarding a bus  [5]

59/

54..dependent on signals from the brakes, e.g. parking brakes  [5]

59/

56..dependent on signals from the main clutch  [5]

59/

58..dependent on signals from the steering  [5]

59/

60.Inputs being a function of ambient conditions  [5]

59/

62..Atmospheric pressure  [5]

59/

64..Atmospheric temperature  [5]

59/

66..Road conditions, e.g. slope, slippery  [5]

59/

68.Inputs being a function of gearing status  [5]

59/

70..dependent on the ratio established  [5]

59/

72..dependent on oil characteristics, e.g. temperature, viscosity  [5]

59/

74.Inputs being a function of engine parameters (F16H 59/14 takes precedence)  [5]

59/

76..Number of cylinders operating  [5]

59/

78..Temperature  [5]

  F16H 23/00 - F16H 39/42    F16H 61/00 - F16H 109:00  
 

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