Fluid handling – Systems – Sequentially closing and opening alternately seating flow...
Patent
1978-07-07
1980-09-09
Schwadron, Martin P.
Fluid handling
Systems
Sequentially closing and opening alternately seating flow...
251230, F16K 31524
Patent
active
042212383
ABSTRACT:
A valve for alternately interrupting and permitting fluid flow is comprised of a cylindrical valve body having medial inlet and outlet chambers which are interconnected by a flow restricting orifice. An inlet enters into the inlet chamber, which opens out of the lower end of the valve body, and an outlet enters into the outlet chamber, which opens out of the upper end of the valve body. A poppet, which slidably fits within the inlet chamber, translates between a closed position wherein it prevents fluid flow through the orifice and an open position wherein flow is permitted, but is normally biased to its closed position by a spring. A plunger, which slidably fits within the outlet cavity, has a reduced diameter extension which extends through the orifice into contact with the poppet so that depression of the plunger causes the poppet to be moved to its open position and, unless otherwise restrained, release of the plunger would cause the poppet to be moved to its closed position. However, a cam, which is located in the valve body, is operably associated with the plunger to limit its travel in a manner such that repeated depression and release of the plunger causes it to be placed alternately in either a raised position, out of contact with the poppet, or in a lowered position, which places the poppet in its open position. Accordingly, the valve intermittently opens and closes as the plunger is repeatedly depressed and released.
REFERENCES:
patent: 1765377 (1930-06-01), Marks
patent: 2412613 (1946-12-01), Grant, Jr.
patent: 3026908 (1962-03-01), Blair
patent: 3333815 (1967-08-01), Downey et al.
patent: 3870275 (1975-03-01), Kallel
patent: 4067358 (1978-01-01), Streich
patent: 4116216 (1978-09-01), Rosenberg
patent: 4134418 (1979-01-01), Woodcock
Chambers A. Michael
Forest Medical Products, Inc.
Schwadron Martin P.
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