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 fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
ENGINEERING IN GENERAL
 F16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
 F16D
COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES  [2]
 F16D

Note(s)

Attention is drawn to the following places:
A01D 69/00Clutches or brakes of harvesters or mowers for grass or cereals 
A61C 1/08Clutches in dental machines for boring or cutting 
B21B 35/00Drive couplings for metal-rolling mills 
B30B 15/00Brakes specially adapted for presses 
B30B 15/00Clutches specially adapted for presses 
B41J 33/52Braking devices for ribbon-feed devices in selective printing mechanisms 
B60K 17/00Arrangement or location of clutches in vehicles 
B61HBrakes peculiar to rail vehicles 
B62B 5/00Braking mechanisms for hand carts 
B62B 9/00Braking mechanisms for children's carriages or perambulators 
B62C 7/00Braking mechanisms for animal-drawn vehicles 
B62LCycle brakes 
B66D 5/00Braking devices for lifting or hoisting gear 
E21B 17/02Couplings for drilling rods 
H02P 3/00Brakes for electric motors, generators, dynamo-electric converters 
H04L 13/02Clutches for apparatus for transmission of coded digital information. 

 F16D
Subclass index
COUPLINGS
In general 1/00
Yielding; impulse; slip 3/00; 5/00; 7/00
With safety members 9/00
Using a fluid as power-transmitting means 31/00, 33/00, 39/00
CLUTCHES
Mechanically actuated
the members being in direct contact 11/00, 13/00, 17/00
with separate members 15/00
others; combinations 19/00; 21/00
details 23/00
Non-mechanically actuated
by fluid 25/00, 29/00
magnetically actuated 27/00, 29/00
electrically actuated 28/00, 29/00
Using a fluid as power-transmitting means 31/00 - 37/00
Freewheels, automatic 41/00, 43/00, 45/00
Combinations 45/00, 47/00
External control of clutches 48/00
FREEWHEELS OR FREEWHEEL CLUTCHES 41/00, 45/00
BRAKES
Characterised by their function 49/00 - 55/00
Using resistance of liquid or air 57/00
Automatic 59/00
With means for making available for use the energy absorbed 61/00
Others 63/00
Details 65/00, 69/00, 71/00
Monitoring working conditions 66/00
COMBINATIONS OF DIFFERENT DEVICES 47/00, 67/00
 F16D 1/00 - 
F16D 9/00
Couplings (fluid couplings F16D 31/00-F16D 39/00; couplings or joints specially adapted for deep-drilling rods or sucker rods E21B; for transmitting motion through a wall without relatively-moving surfaces F16J 15/50)
P:260 F16D 1/00
Couplings for rigidly connecting two coaxial shafts or other movable machine elements (attachment of wheels to axles for railway carriages B60B; for attachment of cranks to their shafts F16C 3/04)
 F16D 1/02
·  for connecting two abutting shafts or the like
 F16D 1/06
·  for attachment of a member on a shaft or on a shaft-end (attachment of marine propellers on shafts B63H 23/00)
P:250 F16D 3/00
Yielding couplings, i.e. with means permitting movement between the connected parts during the drive (couplings disconnectable simply by axial movement F16D 1/00; slip couplings F16D 7/00; fluid couplings allowing continuous slip F16D 31/00-F16D 35/00)
 F16D 3/02
·  adapted to specific functions (universal joints, see the appropriate groups)
 F16D 3/12
·  ·  specially adapted for accumulation of energy to absorb shocks or vibration (by making use of fluid elements F16D 3/00)
 F16D 3/16
·  Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
 F16D 3/50
·  with the coupling parts connected by one or more intermediate members (F16D 3/16 takes precedence)
P:230 F16D 5/00
Impulse couplings, i.e. couplings that alternately accelerate and decelerate the driven member
P:240 F16D 7/00
Slip couplings, e.g. slipping on overload, for absorbing shock (combined with yielding shaft couplings F16D 3/02; fluid slip couplings F16D 31/00-F16D 35/00)
P:220 F16D 9/00
Couplings with safety member for disconnecting
 F16D 11/00 - 
F16D 23/00
Clutches with mechanically-actuated clutching members (automatic clutches F16D 41/00-F16D 45/00; external control F16D 48/00)
P:180 F16D 11/00
Clutches in which the members have interengaging parts (arrangements for synchronisation F16D 23/02)
P:190 F16D 13/00
Friction clutches (arrangements for synchronisation F16D 23/02)
 F16D 13/58
·  Details
 F16D 13/60
·  ·  Clutching elements (friction lining or attachment thereof F16D 69/00)
 F16D 13/64
·  ·  ·  Clutch-plates; Clutch-lamellae (brake-plates, brake-lamellae F16D 65/12)
P:160 F16D 15/00
Clutches with wedging balls or rollers or with other wedgeable separate clutching members (freewheels, freewheel clutches F16D 41/00)
P:170 F16D 17/00
Clutches in which the drive is transmitted solely by virtue of the eccentricity of the contacting surfaces of clutch members which fit one around the other
P:200 F16D 19/00
Clutches with mechanically-actuated clutching members not otherwise provided for
P:150 F16D 21/00
Systems comprising a plurality of mechanically-actuated clutches (for synchronisation F16D 23/02)
P:210 F16D 23/00
Details of mechanically-actuated clutches not specific for one distinct type
 F16D 23/02
·  Arrangements for synchronisation, also for power-operated clutches (shape or mounting of interengaging parts of clutch members to facilitate engagement F16D 11/00)
 F16D 25/00 - 
F16D 29/00
Clutches actuated non-mechanically (arrangements for synchronisation F16D 23/02; fluid clutches F16D 31/00-F16D 39/00; automatic clutches F16D 41/00-F16D 45/00; external control F16D 48/00; dynamo-electric clutches H02K 49/00; clutches using electrostatic attraction H02N 13/00)  [3]
P:120 F16D 25/00
Fluid-actuated clutches
 F16D 25/02
·  with means for actuating or keeping engaged by a force derived at least partially from one of the shafts to be connected
 F16D 25/06
·  in which the fluid actuates a piston incorporated in the clutch (F16D 25/02 takes precedence)
 F16D 25/08
·  with fluid-actuated member not rotating with a clutching member (F16D 25/02 takes precedence)
P:130 F16D 27/00
Magnetically-actuated clutches; Control or electric circuits therefor (clutches with magnetisable particles F16D 37/00; circuits for external control F16D 48/00)  [2]
 F16D 27/10
·  with an electromagnet not rotating with a clutching member, i.e. without collecting rings
P:140 F16D 28/00
Electrically-actuated clutches (clutches actuated directly by means of an electromagnet F16D 27/00)  [6]
P:110 F16D 29/00
Clutches or systems of clutches involving both fluid and magnetic or both fluid and electric actuation  [6]
 F16D 31/00 - 
F16D 39/00
Couplings or clutches with a fluid or semifluid as power-transmitting means (fluid gearing F16H 39/00-F16H 49/00)
P:60 F16D 31/00
Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution
 F16D 31/02
·  using pumps with pistons or plungers working in cylinders
P:70 F16D 33/00
Rotary fluid couplings or clutches of the hydrokinetic type (applicable also to fluid gearing F16H 41/00)
P:50 F16D 35/00
Fluid clutches in which the clutching is predominantly obtained by fluid adhesion (F16D 37/00 takes precedence)
P:40 F16D 37/00
Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
P:30 F16D 39/00
Combinations of couplings according to two or more of the groups F16D 31/00-F16D 37/00
 F16D 41/00 - 
F16D 45/00
Freewheels or freewheel clutches; Automatic clutches (F16D 31/00-F16D 39/00 take precedence)
P:100 F16D 41/00
Freewheels or freewheel clutches (cycle brakes controlled by back-pedalling B62L 5/00)
P:90 F16D 43/00
Internally controlled automatic clutches (varying the relationship between two coaxial shafts F16D 3/02; clutches in which the drive is transmitted through a medium consisting of small particles F16D 37/00; freewheels, freewheel clutches F16D 41/00; external control of clutches F16D 48/00)  [6]
P:80 F16D 45/00
Freewheels or freewheel clutches combined with automatic clutches
   
P:20 F16D 47/00
Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the following sets of groups: F16D 1/00-F16D 9/00; F16D 11/00-F16D 23/00; F16D 25/00-F16D 29/00; F16D 31/00-F16D 39/00; F16D 41/00-F16D 45/00 (freewheels combined with a clutch to lock the driving and driven members of the freewheel F16D 41/00)
P:0 F16D 48/00
External control of clutches  [6]
 F16D 48/00

Note(s)

This group does not cover actuation, which is covered by groups F16D 11/00-F16D 29/00[6]

 F16D 49/00 - 
F16D 66/00
Brakes (electrodynamic brake systems for vehicles in general B60L; dynamo-electric brakes H02K)
P:330 F16D 49/00
Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like (similar clutches F16D 13/00)
P:340 F16D 51/00
Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like (similar clutches F16D 13/00)
P:320 F16D 53/00
Brakes with braking members co-operating with both the periphery and the inner surface of a drum, wheel-rim, or the like (similar clutches F16D 13/00)
P:350 F16D 55/00
Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes (similar clutches F16D 13/00)
 F16D 55/02
·  with axially-movable discs or pads pressed against axially-located rotating members
 F16D 55/22
·  ·  by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads  [5]
 F16D 55/24
·  with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
P:300 F16D 57/00
Liquid-resistance brakes; Air-resistance brakes
P:290 F16D 59/00
Self-acting brakes, e.g. coming into operation at a predetermined speed
P:310 F16D 61/00
Brakes with means for making the energy absorbed available for use (F16D 57/00 takes precedence)
P:280 F16D 63/00
Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D 49/00-F16D 61/00 (brakes with auxiliary members for self-tightening F16D 49/00, F16D 51/00, F16D 55/24)
P:360 F16D 65/00
Parts or details (similar members for clutches F16D 13/58)
 F16D 65/02
·  Braking members; Mounting thereof (friction linings or attachment thereof F16D 69/00)
 F16D 65/04
·  ·  Bands, shoes or pads; Pivots or supporting members therefor  [5]
 F16D 65/092
·  ·  ·  for axially-engaging brakes, e.g. disc brakes  [5]
 F16D 65/12
·  ·  Discs; Drums for disc brakes
 F16D 65/14
·  Actuating mechanisms for brakes; Means for initiating operation at a predetermined position (brake control systems, parts thereof B60T)
 F16D 65/16
·  ·  arranged in or on the brake
 F16D 65/18
·  ·  ·  adapted for drawing members together
 F16D 65/38
·  Slack adjusters
P:270 F16D 66/00
Arrangements for monitoring working conditions, e.g. wear, temperature
   
P:10 F16D 67/00
Combinations of couplings and brakes; Combinations of clutches and brakes (F16D 71/00 takes precedence; combinations of couplings and clutches F16D 47/00; conjoint control of brake systems and driveline clutches in vehicles B60W 10/02, B60W 10/18)  [2]
P:380 F16D 69/00
Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces (clutching elements F16D 13/60; braking members F16D 65/02)
 F16D 69/02
·  Composition of linings (chemical aspects, see the relevant classes)
P:370 F16D 71/00
Mechanisms for bringing members to rest in a predetermined position (combined with, or controlling, clutches F16D 43/00; means for initiating operation of brakes at a predetermined position F16D 65/14; means for securing members after operation F16B 1/00)