Title: Pressure relief valve for blood pressure measuring instrument

Abstract: A pressure relief valve for a blood pressure measuring instrument which is provided with a discharge mechanism for selectively discharging a small or large amount of compressed air. The discharge mechanism of simple structure is constituted from a small number of members including a valve member, a spring, an adjustment screw plug and a push button. A cuff pressure is automatically reduced at the predetermined reducing rate by rotating the adjustment screw plug during the measurement of blood pressure. Pushing of the push button also makes it possible to discharge at once the remaining cuff pressure after the measurement of blood pressure.

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Inventors: Ueda, Kazuo (Tokyo, JP)

Application Number: 909568
Filing Date: 1978-05-25
Publication_date: 1980-04-29
Assignee: Ueda Works Co., Ltd. (Tokyo, JP)
Primary Class(es): 251/285 251/321, 600/498
Other Classes:
US Patent Ref:

1848261	Mar, 1932	McIntyre	251/321.
2960304	Nov, 1960	Goss	251/321.
3823707	Jul, 1974	Hayes	251/285.
4072171	Feb, 1978	Narazawa	128/2.

Other Refs:
Primary Examiner: Rosenthal, Arnold
Assistant Examiner:
Attorney: Kane, Dalsimer, Kane, Sullivan & Kurucz