Power plants – Pressure fluid source and motor – Pulsator
Patent
1975-10-30
1977-07-12
Schwadron, Martin P.
Power plants
Pressure fluid source and motor
Pulsator
60404, 60413, 60553, 60582, 91 28, 91373, 91460, B60T 1312
Patent
active
040345661
ABSTRACT:
A hydraulic boosting apparatus in a braking system, which apparatus has an accumulator which provides an oil pressure accumulated in a high pressure circuit, the oil pressure being supplementarily used in addition to an oil pressure from the usual hydraulic circuit for a braking operation. A booster cylinder has a booster piston, a free spool and an operating spool which are arranged coaxially with each other. There is provided a pressure chamber between the booster piston and the free spool, which chamber communicates with a first working chamber defined in and serving to close an on-off valve which is, in turn, in communication with the accumulator. There is also provided a closed chamber between the free spool and the operating spool, which chamber communicates with a second working chamber defined in and serving to open the on-off valve.
REFERENCES:
patent: 2544042 (1951-03-01), Pontius
patent: 2718877 (1955-09-01), Rishel et al.
patent: 3818705 (1974-06-01), Thomas
patent: 3838629 (1974-10-01), Meyers
patent: 3898809 (1975-08-01), Baker
patent: 3915066 (1975-10-01), Thomas et al.
patent: 3939658 (1976-02-01), Horvath
patent: 3946564 (1976-03-01), Nakagawa
Ichimura Masaaki
Suketomo Toshitaka
Hershkovitz Abraham
Kabushiki Kaisha Komatsu Seisakusho
Schwadron Martin P.
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