Quick acting valves

Details Quick acting valves Quick acting valves

1974-03-18

1976-07-27

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

251 31, 251 33, 251 35, F16K 3138, F16K 1104

Patent

active

039714128

ABSTRACT:
A quick-acting isolating valve including a valve body having a fixed seat defining an opening through which fluid may flow and co-acting therewith a movable head carried on a stem which is provided with a piston reciprocable in a piston chamber formed in the valve body, there being a fluid outlet from the chamber permitting discharge of fluid from the chamber upon movement of the piston within the chamber when the movable head moves toward or away from its fixed seat and means for effecting progressive restriction of fluid flow through the outlet as the movable head approaches the position of abutment with the fixed seat.

REFERENCES:
patent: 1046236 (1912-12-01), Wagner
patent: 1177463 (1916-03-01), Wagner
patent: 1435067 (1922-11-01), Hurst
patent: 1647189 (1927-11-01), Mueller et al.
patent: 2000297 (1935-05-01), Putnam
patent: 2205033 (1940-06-01), Dreyer et al.
patent: 2487418 (1949-11-01), Birkemeier et al.
patent: 2699316 (1955-01-01), Mosher
patent: 2917268 (1959-12-01), Soderberg et al.
patent: 3415269 (1968-12-01), Salerno
patent: 3833200 (1974-09-01), McCombs

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