High vacuum seal

Details High vacuum seal High vacuum seal

1978-10-03

1981-01-13

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251204, 251368, F16K 2500

Patent

active

042445574

ABSTRACT:
A vacuum-tight closure assembly includes a valve seat; a spreadable valve plate movable into a closed position for assuming a spreaded state in which it sealingly engages the valve seat; and a guide arrangement for a centered guiding of the valve plate during its motion into the closed position. The guide arrangement includes guide faces located in the vicinity of and stationarily with respect to the valve seat and counterguide faces located on and movable with the valve plate. The guide faces cooperate with the counterguide faces during the motion of the valve plate towards the closed position.

REFERENCES:
patent: 920178 (1909-05-01), Plantinga
patent: 948359 (1910-02-01), Watson
patent: 2520364 (1950-08-01), Hobbs
patent: 3815868 (1974-06-01), Bobo
patent: 3854697 (1974-12-01), Salloga
patent: 3973753 (1976-08-01), Wheeler
patent: 3974869 (1976-08-01), Abe
patent: 4019534 (1977-04-01), Clements
patent: 4126295 (1978-11-01), Natalizia

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