Patent · US Expired

Lung-governed valve

US5016627A · kind A · utility

59Cited by

2References

9Claims

0Family size

Assignee

Auergesellschaft GmbH · DE

Inventors

Klaus-Dieter Dahrendorf · Berlin, DE
Peter Kling · Berlin, DE
Ulrich Kriems · Berlin, DE

Key dates

Filing date	Nov 27, 1989
Grant date	May 21, 1991
Priority date	—
Expiry date	Nov 27, 2009

Classification

Technology area (CPC A)Human Necessities
CPC primaryA62B9/022
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A lung-governed breathing valve used in a breathing mask for excess pressure operation. The valve has a casing with a spring-loaded control diaphragm which divides the casing into an outer chamber connected to the outside environment and a breathing chamber for conveying the gas for breathing. The control diaphragm controls a breathing gas inlet valve via a lever system and a manually released actuating button. The control diaphragm has a resilient raised portion formed integrally thereon with a recess therein. A push-rod integrally molded on the actuating button is positively engageable in the recess of the raised portion to prevent the lung-governed valve from being accidentally released or switched from the stand-by to the operative position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.