Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1976-04-12
1977-09-06
Schaefer, Robert K.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
220367, 200 84R, 340244E, H01H 3518
Patent
active
040470482
ABSTRACT:
A master cylinder assembly has a stamped steel reservoir and a cover in which a switch, appropriate electrical conduits, and a connector are integrally molded. A fluid level sensor float and rod are arranged to open and close the switch depending upon the level of fluid in the reservoir. A diaphragm seal is assembled to the underside of the cover and has a rod guide provided for the sensor rod. The guide also provides a suitable vent between the fluid chamber of the reservoir and the otherwise sealed space between the diaphragm and the cover. The cover has a peripheral channel receiving a peripheral mounting edge of the diaphragm so that the diaphragm also acts as a seal between the cover and the reservoir housing. The sealing action is primarily radial, between a channel wall and the reservoir housing wall, therefore not requiring the cover to be tightly clamped in place in order to compress a seal. The cover assembly is snapped into place on the reservoir housing. The reservoir also has a plastic inserted baffle dividing the reservoir into a plurality of baffled chambers.
REFERENCES:
patent: 3510836 (1970-05-01), Summerer
patent: 3531767 (1970-09-01), Klein et al.
patent: 3593271 (1971-07-01), Schrader
patent: 3609680 (1971-09-01), Belart
patent: 3931485 (1976-01-01), Spielfiedel et al.
patent: 3964079 (1976-06-01), Katagiri et al.
General Motors Corporation
Ginsburg Morris
McGraw D. D.
Schaefer Robert K.
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