Mechanism for opening and closing mercury sphygmomanometer

Details Mechanism for opening and closing mercury sphygmomanometer Mechanism for opening and closing mercury sphygmomanometer

1989-01-04

1990-04-24

Sykes, Angela D.

Surgery

Truss

Pad

A61B 502

Patent

active

049191420

ABSTRACT:
A mechanism for opening and closing a mercury sphygmomanometer having a set of blood pressure measuring means mounted on the inner side of a cover pivotally attached to a casing and a lever actuated in response to an operation of pivoting the cover such that the lever selects an opening or closing position of a valve provided in between a mercury passage and a mercury reservoir in response to an operation of pivoting the cover. The lever is provided with two abutments which are disposed in a predetermined angular relation to each other with respect to the pivot point of the lever. One of the abutments is movable by a manual operation to select a valve opening or closing position.

REFERENCES:
patent: 1134632 (1915-04-01), Nicholson
patent: 3316766 (1967-05-01), Jones
patent: 4073314 (1978-02-01), Speelman et al.
patent: 4090503 (1978-05-01), Speidel
patent: 4173328 (1979-11-01), Karbo

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