Piston and seal assemblies

Details Piston and seal assemblies Piston and seal assemblies

1974-11-04

1976-09-14

Rothberg, Samuel B.

Expansible chamber devices

Piston

With fluid passage in piston face

92240, 277 29, 277189, 277212C, F16J 900, F16J 1500

Patent

active

039800040

ABSTRACT:
A piston and seal assembly is adapted to work in a cylinder, particularly a master cylinder of a vehicle braking system, the seal having a lip which sealingly engages the cylinder bore on the pressure stroke, an inner portion mounted on the piston, and an interconnecting portion between the lip and the inner portion. A retaining member holds the seal on the piston and engages the interconnecting portion during the return stroke of the piston so that the seal flexes about the line of engagement between the retaining member and the interconnecting portion to provide a recuperation flow path between the lip and the cylinder bore.

REFERENCES:
patent: 2076363 (1937-04-01), Brunner
patent: 2313271 (1943-03-01), Schnell
patent: 3110502 (1963-11-01), Pagan
Machine Design - Sept. 1944, pp. 126 and 127.

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