Power plants – Pressure fluid source and motor – Pulsator
Patent
1982-12-23
1984-09-25
Garrett, Robert E.
Power plants
Pressure fluid source and motor
Pulsator
60581, 60589, 60592, B60T 1120
Patent
active
044729421
ABSTRACT:
In a tandem type brake master cylinder having a body formed with coaxial large and small cylinder bores, a first piston member having a large land sliding in the large bore and a first small land sliding in the small bore, a second piston member having second and third small lands sliding in the small bore, a first chamber defined between the large land and the first small land, a second chamber defined between the first and the second small lands, a third chamber defined between the third small land and a closed end of the small bore, a first spring biasing the first and second piston members apart, a second spring biasing the second piston member away from the closed end of the small bore, first and second outlets opening from the second and third chambers respectively, and a means to allow fluid to pass from the first chamber to the second chamber but not back, a means is provided to prevent the first piston member and the second piston member from becoming separated by a distance greater than a certain predetermined distance.
REFERENCES:
patent: 4004425 (1977-01-01), Pickering
patent: 4156348 (1979-05-01), Brown
patent: 4191020 (1980-03-01), Krohn et al.
patent: 4270354 (1981-06-01), Koshimizu
patent: 4372117 (1983-02-01), Kobayashi
Kawaguchi Hiroshi
Mori Yoshinori
Nishiwaki Kiyoshi
Nomura Yoshihisa
Takeuchi Hiroaki
Aisin Seiki Kabushiki Kaisha
Garrett Robert E.
Moritz Scott L.
Toyota Jidosha & Kabushiki Kaisha
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