Valve device using an on-off functioning type electromagnetic ac

Details Valve device using an on-off functioning type electromagnetic ac Valve device using an on-off functioning type electromagnetic ac

1980-06-20

1982-01-26

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Dashpot or fluid controlled retarder or timer

123 9011, 123 9015, 123 9049, 123 9066, 123 9067, 188317, 251129, F16K 3102, F01L 116, F01L 904

Patent

active

043124941

ABSTRACT:
A piston is biased by a valve so as to decrease the volume of a chamber just before seating of the valve on the valve seat and brakes and slows up movement of the valve towards the valve seat by compressing a hydraulic fluid in the chamber and forcing out the hydraulic fluid from the chamber through a hole at a limited flow rate.

REFERENCES:
patent: 1353993 (1920-09-01), Fisher
patent: 1427111 (1922-08-01), Knudsen
patent: 1675954 (1928-07-01), Page
patent: 1887078 (1932-11-01), Wheaton
patent: 2108514 (1938-02-01), Summers
patent: 3678096 (1972-07-01), Repko et al.
patent: 3727595 (1973-04-01), Links
patent: 3882833 (1975-05-01), Longstaff et al.

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