|  | 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

|  | F16D |
COUPLINGS FOR TRANSMITTING ROTATION (gearing for conveying rotation Fulltext... Hierarchy... Expanded...F16H, e.g. fluid gearing Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 39/00-F16H 47/00); CLUTCHES (dynamo-electric clutches Fulltext... Hierarchy... Expanded...H02K 49/00; clutches using electrostatic attraction Fulltext... Hierarchy... Expanded...H02N 13/00); BRAKES (electrodynamic brake systems for vehicles in general Fulltext... Hierarchy... Expanded...B60L; dynamo-electric brakes Fulltext... Hierarchy... Expanded...H02K 49/00) [2]

|  | F16D |
Note(s) Attention is drawn to the following places:
Fulltext... Hierarchy... Expanded...A01D 69/00 | Clutches or brakes of harvesters or mowers for grass or cereals |
Fulltext... Hierarchy... Expanded...A61C 1/08 | Clutches in dental machines for boring or cutting |
Fulltext... Hierarchy... Expanded...B21B 35/00 | Drive couplings for metal-rolling mills |
Fulltext... Hierarchy... Expanded...B30B 15/00 | Brakes specially adapted for presses |
Fulltext... Hierarchy... Expanded...B30B 15/00 | Clutches specially adapted for presses |
Fulltext... Hierarchy... Expanded...B41J 33/52 | Braking devices for ribbon-feed devices in selective printing mechanisms |
Fulltext... Hierarchy... Expanded...B60K 17/00 | Arrangement or location of clutches in vehicles |
Fulltext... Hierarchy... Expanded...B61H | Brakes peculiar to rail vehicles |
Fulltext... Hierarchy... Expanded...B62B 5/00 | Braking mechanisms for hand carts |
Fulltext... Hierarchy... Expanded...B62B 9/00 | Braking mechanisms for children's carriages or perambulators |
Fulltext... Hierarchy... Expanded...B62C 7/00 | Braking mechanisms for animal-drawn vehicles |
Fulltext... Hierarchy... Expanded...B62L | Cycle brakes |
Fulltext... Hierarchy... Expanded...B66D 5/00 | Braking devices for lifting or hoisting gear |
Fulltext... Hierarchy... Expanded...E21B 17/02 | Couplings for drilling rods |
Fulltext... Hierarchy... Expanded...H02P 3/00 | Brakes for electric motors, generators, dynamo-electric converters |
Fulltext... Hierarchy... Expanded...H04L 13/02 | Clutches 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

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 Fulltext... Hierarchy... Expanded...B60B; for attachment of cranks to their shafts Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F16D 1/00; slip couplings Fulltext... Hierarchy... Expanded...F16D 7/00; fluid couplings Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 31/00-F16D 39/00)

|  | 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 Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...F16D 3/16 takes precedence)

P:230 |  | F16D 5/00 |
Impulse couplings, i.e. couplings that alternately accelerate and decelerate the driven member (fluid couplings Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 31/00-F16D 39/00)

P:240 |  | F16D 7/00 |
Slip couplings, e.g. slipping on overload, for absorbing shock (combined with yielding shaft couplings Fulltext... Hierarchy... Expanded...F16D 3/02; fluid slip couplings Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...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; Synchronisation arrangements for clutches

P:180 |  | F16D 11/00 |
Clutches in which the members have interengaging parts (arrangements for synchronisation Fulltext... Hierarchy... Expanded...F16D 23/02; automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00)

P:190 |  | F16D 13/00 |
Friction clutches (arrangements for synchronisation Fulltext... Hierarchy... Expanded...F16D 23/02; automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00)

|  | F16D 13/58 |
· | Details

|  | F16D 13/60 |
· · | Clutching elements (friction lining or attachment thereof Fulltext... Hierarchy... Expanded...F16D 69/00)

|  | F16D 13/64 |
· · · | Clutch-plates; Clutch-lamellae (brake-plates, brake-lamellae Fulltext... Hierarchy... Expanded...F16D 65/12)

P:160 |  | F16D 15/00 |
Clutches with wedging balls or rollers or with other wedgeable separate clutching members (freewheels, freewheel clutches Fulltext... Hierarchy... Expanded...F16D 41/00; automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00)

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 (automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00)

P:200 |  | F16D 19/00 |
Clutches with mechanically-actuated clutching members not otherwise provided for (automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00)

P:150 |  | F16D 21/00 |
Systems comprising a plurality of mechanically-actuated clutches (for synchronisation Fulltext... Hierarchy... Expanded...F16D 23/02; automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00)

P:210 |  | F16D 23/00 |
Details of mechanically-actuated clutches not specific for one distinct type; Synchronisation arrangements for clutches

|  | F16D 23/02 |
· | Arrangements for synchronisation (shape or mounting of interengaging parts of clutch members to facilitate engagement Fulltext... Hierarchy... Expanded...F16D 11/00)

|  | F16D 25/00 - F16D 29/00 |
Clutches actuated non-mechanically [3]

P:120 |  | F16D 25/00 |
Fluid-actuated clutches (arrangements for synchronisation Fulltext... Hierarchy... Expanded...F16D 23/02; fluid clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 31/00-F16D 39/00; automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00)

|  | 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 (Fulltext... Hierarchy... Expanded...F16D 25/02 takes precedence)

|  | F16D 25/08 |
· | with fluid-actuated member not rotating with a clutching member (Fulltext... Hierarchy... Expanded...F16D 25/02 takes precedence)

P:130 |  | F16D 27/00 |
Magnetically-actuated clutches; Control or electric circuits therefor (arrangements for synchronisation Fulltext... Hierarchy... Expanded...F16D 23/02; clutches with magnetisable particles Fulltext... Hierarchy... Expanded...F16D 37/00; automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; circuits for external control Fulltext... Hierarchy... Expanded...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 (arrangements for synchronisation Fulltext... Hierarchy... Expanded...F16D 23/02; clutches actuated directly by means of an electromagnet Fulltext... Hierarchy... Expanded...F16D 27/00; automatic clutches Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 43/00-F16D 45/00; external control Fulltext... Hierarchy... Expanded...F16D 48/00) [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

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 Fulltext... Hierarchy... Expanded...F16H 41/00)

P:50 |  | F16D 35/00 |
Fluid clutches in which the clutching is predominantly obtained by fluid adhesion (Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 31/00-F16D 37/00

|  | F16D 41/00 - F16D 45/00 |
Freewheels or freewheel clutches; Automatic clutches

|  | F16D 41/00 - F16D 45/00 |
Note(s) Groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 31/00-F16D 39/00 take precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 41/00-F16D 45/00. [2009.01]

P:100 |  | F16D 41/00 |
Freewheels or freewheel clutches (cycle brakes controlled by back-pedalling Fulltext... Hierarchy... Expanded...B62L 5/00)

P:90 |  | F16D 43/00 |
Internally controlled automatic clutches (varying the relationship between two coaxial shafts Fulltext... Hierarchy... Expanded...F16D 3/02; clutches in which the drive is transmitted through a medium consisting of small particles Fulltext... Hierarchy... Expanded...F16D 37/00; freewheels, freewheel clutches Fulltext... Hierarchy... Expanded...F16D 41/00; external control of clutches Fulltext... Hierarchy... Expanded...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: Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 1/00-F16D 9/00; Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 11/00-F16D 23/00; Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 25/00-F16D 29/00; Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 31/00-F16D 39/00; Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 41/00-F16D 45/00 (freewheels combined with a clutch to lock the driving and driven members of the freewheel Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 11/00-F16D 29/00. [6]

|  | F16D 49/00 - F16D 66/00 |
Brakes

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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16D 49/00-F16D 61/00 (brakes with auxiliary members for self-tightening Fulltext... Hierarchy... Expanded...F16D 49/00, Fulltext... Hierarchy... Expanded...F16D 51/00, Fulltext... Hierarchy... Expanded...F16D 55/24)

P:360 |  | F16D 65/00 |
Parts or details of brakes (similar members for clutches Fulltext... Hierarchy... Expanded...F16D 13/58)

|  | F16D 65/02 |
· | Braking members; Mounting thereof (friction linings or attachment thereof Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 of brakes, e.g. wear or temperature

P:10 |  | F16D 67/00 |
Combinations of couplings and brakes; Combinations of clutches and brakes (Fulltext... Hierarchy... Expanded...F16D 71/00 takes precedence; combinations of couplings and clutches Fulltext... Hierarchy... Expanded...F16D 47/00; conjoint control of brake systems and driveline clutches in vehicles Fulltext... Hierarchy... Expanded...B60W 10/02, Fulltext... Hierarchy... Expanded...B60W 10/18) [2]

P:380 |  | F16D 69/00 |
Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces (clutching elements Fulltext... Hierarchy... Expanded...F16D 13/60; braking members Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F16D 43/00; means for initiating operation of brakes at a predetermined position Fulltext... Hierarchy... Expanded...F16D 65/14; means for securing members after operation Fulltext... Hierarchy... Expanded...F16B 1/00)