Boots – shoes – and leggings
Patent
1981-10-09
1985-11-26
Krass, Errol A.
Boots, shoes, and leggings
137 85, 13762569, 303 95, 25112903, F15B 903
Patent
active
045557667
ABSTRACT:
A microprocessor having input fluid brake control apparatus and output fluid brake application apparatus is provided wherein the output fluid brake application apparatus comprises a digital signal characteristic of a desired fluid braking pressure. The brake application apparatus comprises an improved fluid pressure regulator having a fluid pressure chamber for developing and maintaining a regulated braking fluid pressure. The improved regulator has valves selectively operable to brake application, release, and lap positions for selectively governing regulated fluid pressure in a braking device and in the fluid pressure chamber. A digital linear actuator having an axially operable shaft responsive to the digital signal is provided to actuate the valves alternately to application and release positions, the actuator being secured to a piston subject to pressure in the fluid pressure chamber on one side thereof and subject to pressure of a metering spring on the other side thereof. The valves are governed by a spool that is linearly actuated by the actuator.
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Black Thomas G.
FitzGerald Thomas R.
General Signal Corporation
Krass Errol A.
Mednick Jeffrey S.
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