Valve seal for a master cylinder

Details Valve seal for a master cylinder Valve seal for a master cylinder

1991-12-06

1993-03-23

Look, Edward K.

Power plants

Pressure fluid source and motor

Pulsator

60592, 251359, B60T 1128

Patent

active

051953226

ABSTRACT:
The present inventive relates to a master cylinder (1 ) with elastomeric central valves (20) which can be opened in opposition to a relatively high pressure in the pressure chambers (8 and 9) without damage. The sealing face (29) of the valve member (26) is in the form of a hollow cylinder protruding slightly from the broad head portion (24) of the valve pin (21). The valve member sealing face does not, as has been conventional practice, extend radially inwardly past the head portion (24) in the direction of the central bore (13) to avoid being drawn into the bore (13).

REFERENCES:
patent: 4147824 (1979-04-01), Dettmann et al.
patent: 4753075 (1988-06-01), Nomura et al.
patent: 4888952 (1989-12-01), Zirps
patent: 4997009 (1991-03-01), Niikura et al.
Metals Handbook, vol. 5, Ninth Ed, pp. 150-154, 1982.
Tool Engineers Handbook, First Ed, p. 1564, 1949.

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