Power plants – Pressure fluid source and motor – Pulsator
Patent
1973-10-23
1976-02-10
Schwadron, Martin P.
Power plants
Pressure fluid source and motor
Pulsator
60592, B60T 1722
Patent
active
039370208
ABSTRACT:
A dual master cylinder has a cylinder housing in which one bore is provided. A pair of pressurizing pistons are mounted in tandem in the bore to define therewith a pair of pressurizing chambers. Each chamber is connected to a separate brake circuit. The cylinder housing also has formed in it a pair of secondary reservoir chambers which are connected to the bore by compensation ports. A single primary reservoir chamber is formed by a stamped metal reservoir body which is secured to the cylinder housing over the secondary reservoir chambers so as to cover those chambers and seal them. Fluid transfer ports through the bottom of the reservoir body connect with the secondary reservoir chambers, and have their axes axially misaligned relative to the axes of the compensation ports so that fluid returning to the reservoirs through the compensation ports will not be able to enter the primary reservoir chamber when a squirting action takes place. A fluid level sensor is mounted in the side of the reservoir body so that it senses the level of brake fluid in the primary reservoir chamber. The reservoir body has a sealed diaphragm and cover which closes the primary reservoir chamber.
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Bierlein Carl A.
Schaefer Ernest D.
Burks H.
General Motors Corporation
McGraw D. D.
Schwadron Martin P.
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