Valves and valve actuation – Valve actuator is valve casing or extension thereof – Jointed or flexible wall
Patent
1983-12-05
1985-08-13
Chambers, A. Michael
Valves and valve actuation
Valve actuator is valve casing or extension thereof
Jointed or flexible wall
251354, 137843, 604 48, 604119, 604902, A61M 100
Patent
active
045345422
ABSTRACT:
A suction control device for an aspirator system includes a generally T-shaped body having a main lumen and a passage which extends outwardly from the lumen to the exterior of the body through a vent or chimney portion of the body, and a resiliently deformable closure cap having one or more apertures therethrough which is received on the end of the chimney portion. The chimney portion is preferably formed with a flared terminal end, and the cap is resiliently depressible to a closed position wherein the apertured portion thereof is urged against the inner surface of the flared chimney portion end to obstruct the apertures in the cap and thereby close off the chimney portion. When the device is in the open position thereof, suction communication in the main lumen is interrupted by a venting effect through the chimney portion; and when the device is in its closed position, suction or negative pressure may be transmitted through the main lumen. By varying the degree of closure of the apertures, variable suction control may be achieved.
REFERENCES:
patent: 2674262 (1954-04-01), Bradshaw
patent: 3319628 (1967-05-01), Halligan
patent: 3547147 (1970-12-01), Shay
patent: 3595234 (1971-07-01), Jackson
patent: 4287889 (1981-09-01), Stupar
patent: 4356823 (1982-11-01), Jackson
patent: 4420101 (1983-12-01), O'Neill
Chambers A. Michael
Fox John C.
Superior Plastic Products Corp.
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