(0)B60T:0/2:
IPC6
SECTION B - PERFORMING OPERATIONS; TRANSPORTING
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE...
B60T
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B 60 T

 VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS, OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicles, in general B 60 L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F 16 D)
 

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.

 

 

 
 

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

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/ 02 • acting by retarding wheels  

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/ 04 • • acting directly on tread  

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

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/ 08 • • using fluid or powdered medium  

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

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

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

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

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/ 14 • • directly on road (portable devices, e.g. chocks, B 60 T 3/00)  

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

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

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/ 00 Vehicle modifications to facilitate cooling of brakes

Brake control systems or parts thereof
 

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/ 00 Brake-action initiating means

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/ 02 • for personal initiation  

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/ 04 • • foot-actuated  

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/ 06 • • • Disposition of pedal  

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/ 08 • • hand-actuated  

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/ 10 • • • Disposition of hand control  

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

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/ 14 • • operated upon collapse of driver (dead-man's devices for electrically-propelled vehicles B 60 L 3/02)  

7
/ 16 • • operated by remote control, i.e. initiating means not mounted on vehicle  

7
/ 18 • • • operated by wayside apparatus  

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/ 20 • • specially adapted for trailers, e.g. in case of uncoupling of trailer (inertia-actuated overrun brakes B 60 T 13/08)  

7
/ 22 • • initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle [4]  
 

 8
/ 00 Arrangements 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 B 60 T 17/10)

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/ 18 • responsive to vehicle weight or load, e.g. load distribution (B 60 T 8/30 takes precedence; responsive to weight and speed condition B 60 T 8/58) [4]  

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/ 20 • • with stepwise control action  

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/ 22 • • with continuous control action  

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

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/ 26 • characterised by producing differential braking between front and rear wheels  

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/ 28 • • responsive to deceleration [4]  

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/ 30 • • responsive to load [4]  

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/ 32 • responsive to a speed condition, e.g. acceleration or deceleration (B 60 T 8/28 takes precedence; electric devices on electrically propelled vehicles indicating the wheel slip B 60 L 3/10; measuring linear or angular speed per se G 01 P 3/00) [4]  

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

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

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/ 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]  

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/ 42 • • • having expanding chambers for controlling pressure [4]  

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/ 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]  

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/ 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]  

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

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/ 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]  

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/ 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 (B 60 T 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]  
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