B60T 8/34 having a fluid pressure regulator responsive to a speed condition
Introduced: January 1985
Full Title
Full titles differ between systems:
Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force > responsive to a speed condition, e.g. acceleration or deceleration > having a fluid pressure regulator responsive to a speed condition
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 B60T17/10) > responsive to a speed condition, e.g. acceleration or deceleration ( ; B60T8/28 takes precedence; electric devices on electrically propelled vehicles indicating the wheel slip B60L3/10; measuring linear or angular speed per se G01P3/00) > having a fluid pressure regulator responsive to a speed condition
Of 11 combined children, 8 exist in both systems.
3 codes are CPC-only extensions.
IPC defines codes here since 1985.
Child Classifications
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- B60T 8/36 including a pilot valve responding to an electromagnetic force since 1985 +4 CPC IPC+CPC Available in IPC and CPC
- B60T 8/38 including valve means of the relay or driver controlled type since 1985 IPC+CPC Available in IPC and CPC
- B60T 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 since 1985 +9 CPC IPC+CPC Available in IPC and CPC
- B60T 8/42 having expanding chambers for controlling pressure since 1985 +2 CPC IPC+CPC Available in IPC and CPC
- B60T 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 since 1985 +6 CPC IPC+CPC Available in IPC and CPC
- B60T 8/46 the pressure being reduced by exhausting fluid since 1985 IPC+CPC Available in IPC and CPC
- B60T 8/48 connecting the brake actuator to an alternative or additional source of fluid pressure since 1985 +1 CPC IPC+CPC Available in IPC and CPC
- B60T 8/50 having means for controlling the rate at which pressure is reapplied to the brake since 1985 +8 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B60,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 28,052
- HYUNDAI MOTOR COMPANY KR 27,773
- FORD GLOBAL TECHNOLOGIES US 26,243
- KIA MOTORS CORPORATION KR 20,110
- ROBERT BOSCH DE 19,033
- TOYOTA MOTOR CORPORATION JP 17,924
- BMW (BAYERISCHE MOTOREN WERKE) DE 14,214
- HONDA MOTOR COMPANY 12,527
- AUDI DE 10,806
- GM GLOBAL TECHNOLOGY OPERATIONS US 10,336
Top Applicants (CPC)
Class B60,2013–2023, worldwide · Source: EPO PATSTAT
- HYUNDAI MOTOR COMPANY KR 31,729
- FORD GLOBAL TECHNOLOGIES US 29,270
- KIA MOTORS CORPORATION KR 23,892
- ROBERT BOSCH DE 20,384
- TOYOTA MOTOR CORPORATION JP 20,311
- TOYOTA MOTOR CORPORATION 20,237
- BMW (BAYERISCHE MOTOREN WERKE) DE 14,629
- GM GLOBAL TECHNOLOGY OPERATIONS US 11,896
- AUDI DE 11,084
- HONDA MOTOR COMPANY 10,940