F-Term-List

F16D25/06-25/12;48/00-48/12

AA00
TYPE OF OPERATION

AA01

AA02

AA03

AA04

AA05

AA06

AA07

AA08

AA09

AA10

. Electromagnetic operation

. Electric motor operation

. Fluid pressure operation

. . Rotary pistons

. . . with two or more pressure chambers

. . Fixed pistons

. . . having master cylinders

. . Pneumatic pressure

. Operation of a plurality of clutches

. Others *

BB00
TYPE OF CLUTCH

BB01

BB02

BB03

BB04

BB05

BB06

BB07

BB08

BB10

. Claw clutch

. Friction clutches

. . Discs

. . . Multiple plates i.e. with two or more friction discs

. . Cones

. . Drums

. . Lap springs

. Space clutches or powder clutches

. Others *

F16D25/06-25/12

CA00
CHARACTERISED BY CONSTITUTION OF ROTARY PISTON-TYPE

CA01

CA03

CA05

CA06

CA07

CA09

. Clutch drums or cylinders see viewpoint DA

. Pistons see viewpoint DA

. Clutch engaging parts

. . Friction discs see viewpoint DB

. . Friction plate expanding means

. Return springs or retainers see viewpoint DC

CA11

CA12

CA13

CA14

CA20

. Operation fluid passages

. . Piping parts

. . Shaft centre parts

. . Clutch drums or cylinder parts

. Others *

CB00
CHARACTERISED BY CONSTITUTION OF FIXED PISTON-TYPE

CB01

CB02

CB03

CB04

CB05

CB07

CB08

CB09

CB10

. Association with clutch pedals

. Master cylinder parts

. . Cylinders

. . Pistons

. . Check valves

. Reservoirs

. Piping parts

. Power mechanisms

. . Using negative pressure see viewpoint GD

CB11

CB12

CB14

CB15

CB16

CB17

CB18

. . Use of air tanks e.g. a high-pressure air tank see viewpoint GD

. . Use of pressure fluid e.g. use of pumps see viewpoint GD

. Return spring parts see viewpoint DC

. Release cylinder parts see viewpoint DA

. Operating levers or release levers

. Clearance adjustment means

. . Automatic wear-compensation

CB21

CB22

CB23

CB30

. Clutch release bearings

. Clutch engaging parts

. . Friction discs see viewpoint DB

. Others *

DA00
CHARACTERISED BY PISTON OR CYLINDER

DA01

DA02

DA03

DA04

DA06

DA07

DA09

DA10

. Through-holes excluding operating fluid passages

. . with check valves i.e. drift-on balls

. . with centrifugal force application valves

. . with throttle orifices

. Operating fluid passages

. . Grooves

. Association with clutch engaging parts

. . Splines

DA11

DA13

DA15

DA16

DA17

DA18

DA20

. Double cylinders or double pistons

. Locking of pistons

. Coatings or plating

. Assembly

. . Mounting to rotary shafts

. relating to manufacturing methods

. Others *

DB00
CHARACTERISED BY FRICTION DISC

DB01

DB02

DB03

DB05

DB07

DB10

. Friction surfaces

. . with recesses and protrusions other than grooves

. . with grooves

. Splines

. Coating or plating

. Others *

DC00
CHARACTERISED BY RETURN SPRING OR RETAINER

DC01

DC03

DC04

DC05

DC07

DC10

. Mounting

. Types

. . Disc springs or diaphragm springs

. . Coil springs

. Spring retainers

. Others *

F16D25/06-25/12;48/02-48/04

EE00
CHARACTERISED BY CONSTITUTION OTHER THAN CA - DC

EE01

EE02

EE03

EE04

EE05

EE06

EE07

EE08

EE09

EE10

. Casings

. Vibration or shock absorption

. Bearings

. Shaft seals seals lubricating or measures against oil leakage

. Lubrication or cooling

. . Cooling by means other than lubricants

. Safety devices

. . Monitoring devices

. Operation detecting means

. Others *

F16D25/06-25/12;48/00-48/12

FF00
CHARACTERISED BY CONSTITUTION OF A PLURALITY OF CLUTCHES

FF01

FF02

FF03

FF04

FF06

FF07

FF09

FF10

. with two or more hydraulic-pressure chambers

. . Hydraulic pressure chambers facing side by side

. . . expanding or spreading the pistons

. . . binding or clamping the pistons

. with the same pistons to be operated

. with different pistons to be operated

. with pressure fluids to be operated simultaneously

. with pressure fluids not to be operated simultaneously

FF11

FF12

FF14

FF15

FF17

FF20

. with one main pressure passage

. with multiple main pressure passages

. with the same operation pressure

. with different operation pressure

. Combination of different types of clutches

. Others *

GA00
PURPOSE OF CONTROL

GA01

GA02

GA03

GA04

GA05

GA06

GA08

GA09

. Vibration prevention or noise reduction

. Improvement of durability *

. . Prevention of clutches from wearing or burning

. . Damage prevention of internal-combustion engines

. . . Prevention of overrun

. . . Prevention of idling

. . Prevention of breakage of transmission gears

. . Prevention of damage of V-belts

GA11

GA12

GA13

GA14

GA16

GA17

GA18

GA19

GA20

. Reduction of size and weight

. Simplification of structures *

. . Unification or combined use of pedals or levers

. . for disabled persons

. Co-operation or automation merely among driving devices

. Fuel consumption savings *

. . Coasting or neutral running

. . Lock-up

. . Taking account of minimum fuel consumption curves

GA21

GA22

GA23

GA26

GA27

GA28

GA29

GA30

. Improvement of starting ability *

. . Rapid starting

. . Buffered starting

. Improvement of running ability *

. . Acceleration ability

. . Engine brake performance

. . Output increase or output loss prevention

. . Prevention of engine stall

GA31

GA32

GA33

GA34

GA36

GA37

GA38

. . Low speed running safety

. . . Inching ability

. . Prevention of knocking

. . Cornering performance

. Improvements to stopping ability *

. . Rapid stopping

. . Buffered stopping

GA41

GA42

GA43

GA44

GA46

GA47

GA48

GA49

GA50

. Improvements to parking or stopping ability *

. . Prevention of creep

. . Prevention of backward movement on slopes

. . . Use of creeping

. Prevention of tyre slip

. Reduction of speed change shock

. Improvement of brake performance

. Improvement of stability or response of control

. . Hunting prevention

GA51

GA52

GA53

GA54

GA55

GA56

GA57

GA58

GA59

GA60

. Safety or fail-safe

. . Prevention of sudden starting

. . startable in emergency

. . Safety measures in case of incorrect operation

. . . Prevention of incorrect operations

. . Safety measures during backward movement

. . Speed restrictions

. . Operation restriction on pedals or levers

. . Restriction of interlocks

. . Release of control

GA61

GA62

GA64

GA65

GA66

GA67

GA68

. . Diagnosis alarms or operation during failures or abnormalities

. . . Prevention of overload of clutches

. Improvement of clutch performance *

. . Preventing clutch slippage

. . Clutch engage shock reduction

. . . Adjustment or synchronization of engaging start timing

. . . . Adjustment of claw positions

GA71

GA72

GA73

GA74

GA75

GA76

GA80

. . Clutch temperature or clutch cooling

. . Clearance adjustment

. . . Wear automatic compensation

. . Control relating to output

. . . Constant output control

. . . Constant speed control

. Others *

GB00
DETECTION OR INPUT SIGNAL FOR CONTROL

GB01

GB02

GB03

GB04

GB05

GB06

GB08

GB09

GB10

. Propulsion devices i.e. engines

. . Engine revolutions or output

. . . Ignition pulses

. . Throttle opening or negative pressure in induction conduits

. . Operating amount or speed of acceleration pedals or levers

. . Engine temperature or cooling water temperature

. Clutches

. . Engagement or disengagement

. . . Half-clutches or slip state

GB11

GB12

GB13

GB14

GB15

GB16

GB17

GB18

GB19

GB20

. . . . Slip ratio or slip factor

. . . Amount of strokes for clutch operation

. . . Input revolution to clutch

. . . Output revolutions from clutches

. . Clutch operation

. . . Manual or foot control

. . . . by pedals or pedal systems

. . . . by switches

. . Clutch transmission torque

. . . Lockup torque

GB21

GB22

GB23

GB25

GB26

GB27

GB28

GB29

GB30

. . Clutch current or exciting current

. . Hydraulic pressure for clutch operation

. . Clutch-plates temperature

. Speed change

. . Gear shift steps or gear shift ratios

. . Shift change or select levers

. . . switching between forward and backward movement

. Brakes

. . Parking brake or foot brake operation

GB31

GB32

GB33

GB34

GB35

GB36

GB37

GB38

GB39

GB40

. External circumstances of vehicles

. . Road conditions

. . Natural conditions

. . . Wind or atmosphere

. Vehicle conditions

. . Speed or acceleration or deceleration of vehicles

. . Steering wheel operation

. . Use of coolers

. . Use of working machines

. Others *

F16D25/06-25/12;48/02-48/04

GC00
CONTROL METHOD BY FLUID OPERATION CIRCUIT

GC01

GC02

GC03

GC04

GC06

GC08

GC09

GC10

. Fluid-pressure characteristics *

. . with two kinds of high and low pressure

. . with two stages of pressure increase

. . Gradual increase or gradual decrease of pressure

. Control by fluid operation circuits see viewpoint GD

. Control by electric circuits see viewpoint GE *

. . Electric or electronic control devices or the like see viewpoint GE

. . Electromagnetic valves electromagnetic operating valves or the like see viewpoint GE

GC11

GC12

GC20

. . Control of clutch actuators see viewpoint GE

. . Electrically controlled pressure control valves see viewpoint GE

. Others *

GD00
STRUCTURAL ELEMENT OF FLUID OPERATION CIRCUIT

GD01

GD02

GD03

GD04

GD06

GD07

GD08

GD09

GD10

. Pressure control valves devices or mechanisms *

. . with adjustment mechanisms for gradual increase or decrease

. . integrated with switching valves quick return valves or the like

. . Structures of regulator valves or relief valves (GD02 takes precedence)

. Valves

. . Inching valves

. . Switching valves i.e. direction switching valves

. . Non-return valves i.e. check valves

. . Relief valves

GD11

GD13

GD14

GD15

GD16

GD19

GD20

. . Flow control valves

. Springs

. Association with centrifugal operation members

. Association with circuit orifices i.e. throttles

. . Variable orifices i.e. throttles

. Association with accumulators

. using fluid pressure pumps

GD21

GD22

GD23

GD25

GD26

GD30

. Association with power mechanisms

. . Control using pneumatic pressure

. . Control using hydraulic pressure

. Control relating to lubrication

. Hydraulic pressure compensation or hydraulic pressure adjustment

. Others *

F16D25/06-25/12;48/00-48/12

GE00
CONTROL BY ELECTRIC CIRCUIT

GE01

GE03

GE05

GE06

GE07

GE08

GE10

. Detection circuits *

. Feedforward control *

. Feedback control *

. Digital control *

. . Program control or microcomputer control *

. . Duty ratio control *

. Safety circuits *

GE11

GE13

GE15

GE16

GE17

GE18

GE20

. Learning control AI control or fuzzy control *

. Compensation *

. Overexcitation starting

. Reduction of remanence or reverse excitation

. Absorption of back-electromotive force

. Voltage compensation or voltage adjustment

. Others *

HH00
USE

HH01

HH02

HH03

HH04

HH05

HH06

HH07

HH08

HH10

. Vehicles

. . Motor vehicles

. . . Auxiliaries

. . Construction civil engineering or industrial vehicles

. . Agricultural vehicles

. . Two-wheeled vehicles

. Vessels

. Machine tools

. Others *

JJ00
PLACE FOR USE

JJ01

JJ02

JJ03

JJ04

JJ05

JJ06

JJ07

JJ08

JJ10

. Main clutch units for power transmission

. Transmission parts

. . Forward and backward switching

. . Automatic transmission or automatic continuous transmission

. Differential devices

. Direct-coupled clutch parts of torque converters

. Power take-off units (PTO)

. Wheel hubs

. Others *

3J057	HYDRAULIC CLUTCHES, MAGNETIC CLUTCHES, FLUID CLUTCHES, AND FLUID JOINTS
	F16D25/00 -39/00;48/00-48/12