Valves and valve actuation – Reciprocating valve – Gate
Patent
1993-08-09
1994-06-14
Fox, John C.
Valves and valve actuation
Reciprocating valve
Gate
13762548, 604902, F16K 300
Patent
active
053203283
ABSTRACT:
A suction control valve is disclosed that vents to atmosphere the residual vacuum pressure presented to a suction catheter or similar device when the central bore of the valve is completely blocked by a valve member and the device that the suction control valve is controlling becomes occluded. A vent bore extends from the central bore through the valve body underneath the valve member. A vent channel is formed in the underside of the valve member longitudinally aligned with the vent bore and extending a small distance along the underside of the valve body from the end of the valve body. The length of the vent channel is such that when the valve member completely blocks the central bore, the vent channel is positioned over the vent bore thereby forming a vent path from the central bore through the vent bore and vent channel to the atmosphere. Unless the valve body is in the fully closed position, the vent bore is not aligned with the vent channel. As a result, no vent path is formed between the central bore and the atmosphere.
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Decloux Henri A. M.
Katsaros Georges P.
Beck Andrew J.
Fox John C.
Kinghorn Curtis D.
Sherwood Medical Company
Smith Montgomery W.
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