B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/70
B60T 1/00 (2006.01) B60T 13/16 (2006.01)
Patent
CA 1265171
HYDRAULIC POWER BRAKE APPARATUS ABSTRACT OF THE DISCLOSURE The hydraulic power braking apparatus comprises a fluid power apparatus (10) receiving fluid pressure from a power steering apparatus of the vehicle, the fluid power apparatus (10) connected at one end to the brake pedal of the vehicle and at the other end to a master cylinder (110). The master cylinder (110) is connected to a fluid displacement multiplier (210), fluid pressure developed by the master cylinder being communicated to the fluid displacement multiplier (210). The fluid dis- placement multiplier (210) comprises a housing (212) having therein a stepped chamber (211) with a differ- ential area piston (213), the differential area piston (213) having a through passage (240) controlled by a poppet valve (250). A fluid pressure line (31) communi- cates the working chamber (18) of the fluid power apparatus (10) with a variable volume chamber (290) of the displacement multiplier (210) so that when actuation of the brake system causes operation of the fluid power apparatus (10), fluid pressure in the working chamber (18) is communicated directly to the displacement multi- plier (210) in order to provide an additional fluid power boost to the differential area piston (213) activated by output fluid pressure received from the master cylinder (110).
518405
Jackson Robert W.
Kosarski Raymond Jr.
Alliedsignal Inc.
Macrae & Co.
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