Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1989-06-13
1991-05-07
Look, Edward K.
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
91372, 91374, F15B 1047, F15B 910
Patent
active
050126474
ABSTRACT:
A throttle-controlled hydraulic power brake employing a pressurized fluid produced via a pump and preferably stored in an accumulator for enabling servo-assisted displacement of a push rod acting on the master cylinder of a brake pump (of the same type employed on vacuum-operated power brakes) subsequent to axial displacement of a second push rod controlled directly by the brake pedal. Displacement of the second push rod towards the first provides, against the action of elastic means, for opening a first face seal valve, which feeds the pressurized fluid into a variable-volume accumulating chamber, so as to displace a piston connected axially to the first push rod and defining a movable wall of the accumulating chamber, and so close the valve. Opposite displacement of the second push rod, on the other hand, provides for opening a second face seal valve connecting the accumulating chamber to a drain.
REFERENCES:
patent: 3366424 (1968-01-01), Edwards
patent: 3707112 (1972-12-01), Ewald
patent: 3707880 (1973-01-01), Bach
patent: 3875748 (1975-04-01), Dehoff
patent: 3889467 (1975-06-01), Huffman et al.
patent: 4750406 (1988-06-01), Belart
patent: 4860636 (1989-08-01), Bertling et al.
patent: 4860637 (1989-08-01), Schmitt
patent: 4873128 (1989-11-01), Resch
patent: 4882976 (1989-11-01), Abbing et al.
Maggioni Virginio
Torrielli Vittorino
Fiat Auto S.p.A.
Kapsalas George
Look Edward K.
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