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IPC 7
 
B60T-B60T01134
  B60T 13/00 - B60T 105:00  

SECTION B – PERFORMING OPERATIONS; TRANSPORTING


B 60VEHICLES IN GENERAL


B 60 TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS, OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicles, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D)


Note

 In this subclass, the following expression is used with the meaning indicated:

 "brake control systems" includes brake control systems for vehicles or of general applicability.


Subclass Index

IMMOBILISATION 

Portable devices 

B60T 3/00 

BRAKING 

Kind of braking and corresponding arrangements 

B60T 1/00 

Vehicle modifications for cooling brakes 

B60T 5/00 

Kinds of brake control 

initating means; varying braking force or its distribution according to road or load conditions 

B60T 7/00; B60T 8/00 

continuous braking 

B60T 10/00 

transmission of control between initiating means and brakes 

B60T 11/00, B60T 13/00 

Parts or accessories for fluid-pressure brake control: 

valve structure, disposition, and operation 

B60T 15/00 

other parts or accessories 

B60T 17/00 



1/

00Arrangements of braking elements, i.e. of those parts where braking effect occurs

1/

02.acting by retarding wheels

1/

04..acting directly on tread

1/

06..acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission

1/

08..using fluid or powdered medium

1/

087...in hydrodynamic, i.e. non-positive displacement, retarders  [3]

1/

093...in hydrostatic, i.e. positive displacement, retarders  [3]

1/

10..by utilising wheel movement for accumulating energy, e.g. driving air compressors (using propulsion unit as braking means, see the relevant class)

1/

12.acting otherwise than by retarding wheels, e.g. jet- action

1/

14..directly on road (portable devices, e.g. chocks, B60T 3/00)

1/

16..by increasing air resistance, e.g. flaps


3/

00Portable devices for preventing unwanted movement of vehicles, e.g. chocks


5/

00Vehicle modifications to facilitate cooling of brakes


Brake control systems or parts thereof


7/

00Brake-action initiating means

7/

02.for personal initiation

7/

04..foot-actuated

7/

06...Disposition of pedal

7/

08..hand-actuated

7/

10...Disposition of hand control

7/

12.for automatic initiation; for initiation not subject to will of driver or passenger

7/

14..operated upon collapse of driver (dead-man's devices for electrically-propelled vehicles B60L 3/02)

7/

16..operated by remote control, i.e. initiating means not mounted on vehicle

7/

18...operated by wayside apparatus

7/

20..specially adapted for trailers, e.g. in case of uncoupling of trailer (inertia-actuated overrun brakes B60T 13/08)

7/

22..initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle  [4]


8/

00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force (by changing number of effective brake cylinders in power brake systems B60T 17/10)

8/

18.responsive to vehicle weight or load, e.g. load distribution (B60T 8/30 takes precedence; responsive to weight and speed condition B60T 8/58)  [4]

8/

20..with stepwise control action

8/

22..with continuous control action

8/

24.responsive to vehicle inclination or change of direction, e.g. negotiating bends

8/

26.characterised by producing differential braking between front and rear wheels

8/

28..responsive to deceleration  [4]

8/

30..responsive to load  [4]

8/

32.responsive to a speed condition, e.g. acceleration or deceleration (B60T 8/28 takes precedence; electric devices on electrically propelled vehicles indicating the wheel slip B60L 3/10; measuring linear or angular speed per se G01P 3/00)  [4]

8/

34..having a fluid pressure regulator responsive to a speed condition  [4]

8/

36...including a pilot valve responding to an electromagnetic force  [4]

8/

38...including valve means of the relay or driver controlled type  [4]

8/

40...comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system  [4]

8/

42...having expanding chambers for controlling pressure  [4]

8/

44...co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device  [4]

8/

46...the pressure being reduced by exhausting fluid  [4]

8/

48...connecting the brake actuator to an alternative or additional source of fluid pressure  [4]

8/

50...having means for controlling the rate at which pressure is reapplied to the brake  [4]

8/

52..Torque sensing, i.e. wherein the braking action is controlled by forces producing or tending to produce a twisting or rotating motion on a braked rotating member  [4]

8/

54..by mechanical means  [4]

8/

56..having means for changing the coefficient of friction  [4]

8/

58..responsive to speed and another condition or to plural speed conditions  [4]

Note

 In this group, a single condition which is itself responsive to, or representative of, another single condition is not regarded as plural conditions.  [4]

8/

60...using electrical circuitry for controlling the braking action, the circuitry deriving a control function relating to the dynamic of the braked vehicle or wheel  [4]

8/

62....wherein the individual vehicle wheels are provided (i) with self-contained braking systems operating the individual wheels in accordance with its dynamic state or (ii) with a central processing unit which receives input from individual wheels or wheel groups and produces a plurality of control signals for separately operating individual wheels or groups of wheels  [4]

8/

64....wherein the controlled braking action is characterised by the manner in which the braking fluid pressure is reduced or reapplied  [4]

8/

66....wherein the braking action is responsive to the difference between a computed or other theoretical vehicle speed and an actual speed of a wheel thereof  [4]

8/

68.....wherein the braking action is controlled by a difference between the rate of change of vehicle velocity and the rate of change of wheel velocity  [4]

8/

70.....sensing both acceleration and deceleration of either the vehicle or the wheel  [4]

8/

72..responsive to a difference between a speed condition, e.g. deceleration, and a fixed reference (B60T 8/66 takes precedence)  [4]

8/

74...sensing a rate of change of velocity  [4]

8/

76...two or more sensing means from different wheels indicative of the same type of speed condition  [4]

8/

78...using electrical circuitry for controlling the braking action, the circuitry deriving a control function relating to the dynamics of the braked vehicle or wheel  [4]

8/

80....Means sensing a rate of change of velocity  [4]

8/

82....two or more sensing means from different wheels indicative of the same type of speed condition  [4]

8/

84....wherein two wheels or wheel groups are controlled in dependence on the behaviour of a reference wheel or wheel group, with means for changing the reference wheel, e.g. "select high, select low" operation  [4]

8/

86..wherein the brakes are automatically applied in accordance with a speed condition and having means for overriding the automatic braking device when a skid condition occurs  [4]

8/

88..with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means  [4]

8/

90...using a simulated speed signal to test speed responsive control means  [4]

8/

92...automatically taking corrective action  [4]

8/

94....on a fluid pressure regulator  [4]

8/

96....on speed responsive control means  [4]


10/

00Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope  [4]

10/

02.with hydrodynamic brake  [4]

10/

04.with hydrostatic brake  [4]


11/

00Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant (the power assistance or drive being essential B60T 13/00) [5]

11/

04.transmitting mechanically  [5]

11/

06..Equalising arrangements  [5]

11/

08..providing variable leverage  [5]

11/

10.transmitting by fluid means, e.g. hydraulic  [5]

11/

12..the transmitted force being varied therein (B60T 11/16 to B60T 11/28 take precedence)  [5]

11/

14..the transmitted force being substantially unchanged  [5]

11/

16..Master control, e.g. master cylinders (master cylinders associated with vacuum boosters B60T 13/565)  [5]

11/

18...Connection thereof to initiating means  [5]

11/

20...Tandem, side-by-side, or other multiple master-cylinder units  [5]

11/

21....with two pedals operating on respective circuits, pressures therein being equalised when both pedals are operated together, e.g. for steering (steering non-deflectable wheels or endless tracks by differentially driving ground-engaging elements on opposite vehicle sides using brakes as main steering effecting means B62D 11/08)  [5]

11/

22...characterised by being integral with reservoir  [5]

11/

224...with pressure-varying means, e.g. with two stage operation provided by use of different piston diameters including continuous variation from one diameter to another  [5]

11/

228...Pressure-maintaining arrangements, e.g. for replenishing the master cylinder chamber with fluid from a reservoir (B60T 11/232 takes precedence)  [5]

11/

232...Recuperation valves  [5]

11/

236...Piston sealing arrangements  [5]

11/

24..Single initiating means operating on more than one circuit, e.g. dual circuits (multiple master-cylinder units B60T 11/20)  [5]

11/

26..Reservoirs (integral with master controls B60T 11/22)  [5]

11/

28..Valves specially adapted therefor (recuperation valves B60T 11/232)  [5]

11/

30...Bleed valves for hydraulic brake systems  [5]

11/

32...Automatic cut-off valves for defective pipes  [5]

11/

34...Pressure-reducing or limiting valves  [5]

   B60T 13/00 - B60T 105:00  
 

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