Vacuum valve

Details Vacuum valve Vacuum valve

1995-04-28

1997-07-29

Chambers, A. Michael

Valves and valve actuation

Fluid actuated or retarded

Dashpot or fluid controlled retarder or timer

2513353, F16K 3112

Patent

active

056515286

ABSTRACT:
A vacuum valve has a valve stem with a magnetic drive for moving the valve stem in the opening direction of the valve. A piston configuration is connected to the valve stem and is enclosed within a double-cylinder configuration. Overflow or inflow/outflow lines connected between the two chambers of the double-cylinder configuration, contain flow conductance value setting elements such as valves or filters, for setting a damping effect on movement of the piston configuration, thus damping movement of the valve stem.

REFERENCES:
patent: 3159774 (1964-12-01), Dube et al.
patent: 3273095 (1966-09-01), Rossenbeck
patent: 3326511 (1967-06-01), Hallgreen
patent: 3633869 (1972-01-01), Lehmann
patent: 3810489 (1974-05-01), McManus et al.
patent: 4589627 (1986-05-01), Grotloh et al.

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