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IPC 7
  F16D 5/00 - F16D 25/12  
F16D02700-F16D04330
  F16D 45/00 - F16D 55/50  

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 DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES  [2]


27/

00Magnetically-actuated clutches; Control or electric circuits therefor (clutches with magnetisable particles F16D 37/02; circuits for external control F16D 48/00) [2]

27/

01.with permanent magnets

27/

02.with electromagnets incorporated in the clutch, i.e. with collecting rings

27/

04..with axially-movable friction surfaces

27/

06...with friction surfaces arranged within the flux

27/

07....Constructional features of clutch-plates or clutch-lamellae

27/

08...with friction surfaces arranged externally to the flux

27/

09..and with interengaging jaws or gear-teeth

27/

10.with an electromagnet not rotating with a clutching member, i.e. without collecting rings

27/

102..with radially movable clutching members (F16D 27/105 takes precedence)  [5]

27/

105..with a helical band or equivalent member co-operating with a cylindrical coupling surface  [5]

27/

108..with axially movable clutching members  [5]

27/

11...with conical friction surfaces, e.g. cone clutches  [5]

27/

112...with flat friction surfaces, e.g. discs  [5]

27/

115....with more than two discs, e.g. multiple lamellae  [5]

27/

118..with interengaging jaws or gear teeth  [5]

27/

12.Clutch systems with a plurality of electromagnetically-actuated clutches

27/

14.Details


28/

00Electrically-actuated clutches (clutches actuated directly by means of an electromagnet F16D 27/00) [6]


29/

00Clutches or systems of clutches involving both fluid and magnetic or both fluid and electric actuation  [6]


Couplings or clutches with a fluid or semifluid as power-transmitting means (fluid gearing F16H 39/00 to F16H 49/00)


31/

00Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution

31/

02.using pumps with pistons or plungers working in cylinders

31/

04.using gear-pumps

31/

06.using pumps of types differing from those before-mentioned

31/

08.Control of slip


33/

00Rotary fluid couplings or clutches of the hydrokinetic type

33/

02.controlled by changing the flow of the liquid in the working circuit, while maintaining a completely filled working circuit

33/

04..by altering the position of blades

33/

06.controlled by changing the amount of liquid in the working circuit

33/

08..by devices incorporated in the fluid coupling, with or without remote control

33/

10...consisting of controllable supply and discharge openings

33/

12....controlled automatically by self-actuated valves

33/

14...consisting of shiftable or adjustable scoops

33/

16..by means arranged externally of the coupling or clutch (mounting of such means in vehicles B60K 23/00, e.g. B60K 23/02)

33/

18.Details (applicable also to fluid gearing F16H 41/24)

33/

20..Shape of wheels, blades, or channels with respect to function


35/

00Fluid clutches in which the clutching is predominantly obtained by fluid adhesion (F16D 37/00 takes precedence)

35/

02.with rotary working chambers and rotary reservoirs, e.g. in one coupling part  [5]


37/

00Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive

37/

02.the particles being magnetisable


39/

00Combinations of couplings according to two or more of the groups F16D 31/00 to F16D 37/00


Freewheels or freewheel clutches; Automatic clutches (F16D 31/00 to F16D 39/00 take precedence)


41/

00Freewheels or freewheel clutches (cycle brakes controlled by back-pedalling B62L 5/00)

41/

02.disengaged by contact of a part of or on the freewheel or freewheel clutch with a stationarily-mounted member

41/

04.combined with a clutch for locking the driving and driven members (F16D 41/02, F16D 41/24 take precedence)

41/

06.with intermediate wedging coupling members between an inner and an outer surface (F16D 41/02, F16D 41/24 take precedence)

41/

061..the intermediate members wedging by movement having an axial component  [6]

41/

063..the intermediate members wedging by moving along the inner and the outer surface without pivoting or rolling, e.g. sliding wedges (F16D 41/061 takes precedence)  [6]

41/

064..the intermediate members wedging by rolling and having a circular cross-section, e.g. balls (F16D 41/061 takes precedence)  [6]

41/

066...all members having the same size and only one of the two surfaces being cylindrical  [6]

41/

067....and the members being distributed by a separate cage encircling the axis of rotation  [6]

41/

069..the intermediate members wedging by pivoting or rocking, e.g. sprags (F16D 41/061 takes precedence)  [6]

41/

07...between two cylindrical surfaces  [6]

41/

08..with provision for altering the freewheeling action

41/

10...with self-actuated reversing

41/

12.with hinged pawl co-operating with teeth, cogs, or the like (F16D 41/02, F16D 41/24 take precedence)

41/

14..the effective stroke of the pawl being adjustable

41/

16..the action being reversible

41/

18.with non-hinged detent (F16D 41/02, F16D 41/24 take precedence)

41/

20.with expandable or contractable clamping ring or band (F16D 41/02, F16D 41/24 take precedence)

41/

22.with clutching ring or disc axially shifted as a result of lost motion between actuating members (F16D 41/02, F16D 41/24 take precedence)

41/

24.specially adapted for cycles

41/

26..with provision for altering the action

41/

28..with intermediate wedging coupling members

41/

30..with hinged pawl co-operating with teeth, cogs, or the like

41/

32..with non-hinged detent

41/

34..with expandable or contractable clamping ring or band

41/

36..with clutching ring or disc axially shifted as a result of lost motion between actuating members


43/

00Internally controlled automatic clutches (varying the relationship between two coaxial shafts F16D 3/10; freewheels, freewheel clutches F16D 41/00; external control of clutches F16D 48/00) [6]

43/

02.actuated entirely mechanically

43/

04..controlled by angular speed (F16D 43/24 takes precedence; clutches in which the drive is transmitted through a medium consisting of small particles F16D 37/00)

43/

06...with centrifugal masses actuating axially a movable pressure ring or the like

43/

08....the pressure ring actuating friction plates, cones, or similar axially-movable friction surfaces

43/

09.....in which the carrier of the centrifugal masses can be stopped

43/

10.....the centrifugal masses acting directly on the pressure ring, no other actuating mechanism for the pressure ring being provided

43/

12.....the centrifugal masses acting on, or forming a part of, an actuating mechanism by which the pressure ring can also be actuated independently of the masses

43/

14...with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members

43/

16....with clutching members having interengaging parts

43/

18....with friction clutching members

43/

20..controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure

43/

202...of the ratchet type (slip couplings of the ratchet type F16D 7/04)  [5]

43/

204....with intermediate balls or rollers  [5]

43/

206.....moving axially between engagement and disengagement  [5]

43/

208.....moving radially between engagement and disengagement  [5]

43/

21...with friction members

43/

22..controlled by both speed and torque

43/

24..controlled by acceleration or deceleration of angular speed

43/

25..controlled by thermo-responsive elements

43/

26..acting at definite angular position or disengaging after a definite number of rotations (actuating by means of stationary abutment F16D 11/02, F16D 13/02, F16D 15/00; control of change-speed or reversing-gearings conveying rotary motion F16H 59/00 to F16H 63/00)

43/

28.actuated by fluid pressure

43/

284..controlled by angular speed

43/

286..controlled by torque

43/

30.Systems of a plurality of automatic clutches

  F16D 5/00 - F16D 25/12    F16D 45/00 - F16D 55/50  
 

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