Air release valve for sphygmomanometers and the like

Details Air release valve for sphygmomanometers and the like Air release valve for sphygmomanometers and the like

1985-04-18

1987-05-26

Schwadron, Martin P.

Valves and valve actuation

Tube compressors

Pivoting tube contacting element

251 7, F16L 5514

Patent

active

046679243

ABSTRACT:
An air release valve for sphygmomanometers in the form of a flow metering device in an air outlet duct comprising a length of a flexible tube as part of said duct and a pressure member which is displaceable against the valve tube by means of a pivot lever, so as to collapse one tube wall against the other to close the cavity of the valve tube and to produce an initially very gradual and later progressively greater opening response, when the pressure member is retracted and the valve tube is allowed to return to its open state. The valve tube may be an arcuate tube portion extending freely between two parallel spouts of the air outlet duct, or it may be a straight tube portion confined in a longitudinal groove of the valve housing. A U-shaped leaf spring between the valve housing and the pivot lever provides a valve closing force, finger pressure against the pivot lever produces a controlled valve opening action.

REFERENCES:
patent: 3167085 (1965-01-01), Redmer
patent: 3221943 (1965-12-01), Anderson
patent: 3460526 (1969-08-01), McKirdy et al.
patent: 3544060 (1970-12-01), Stoltz et al.
patent: 3779236 (1973-12-01), Stewart
patent: 3840207 (1974-10-01), Carpenter, Jr.
patent: 4044989 (1977-08-01), Basel et al.
patent: 4146018 (1979-03-01), Aldridge et al.
patent: 4354660 (1982-10-01), Stupar et al.
patent: 4491156 (1985-01-01), Lee, II

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