Document Type and Number:
Japanese Patent JPS5441674
Kind Code:
B1
Abstract:
A disc brake is disclosed which has a spring actuator in addition to the usual hydraulic actuator. When the brake is functioning normally, fluid pressure opposes the spring actuator to permit normal hydraulic operation of the brake. However, when a malfunction in the vehicle's hydraulic system prevents operation of the hydraulic actuator, the spring actuator automatically applies the brake to immobilize the vehicle. A mechanical release mechanism for the spring actuator is provided so that the vehicle may be moved if the spring actuator applies the brake in an inconvenient location. The spring actuator may also be used as a parking brake.
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| WO/2005/033541 | AUTOMATIC PARKING BRAKE DEVICE |
Application Number:
JP3301871A
Publication Date:
December 10, 1979
Filing Date:
May 18, 1971
Export Citation:
International Classes:
F16D65/14; F16D65/56; (IPC1-7): F16D65/20