Patent · US Expired

Combined oxygen mask and smoke goggle apparatus with automatic flush valve

US3971368A · kind A · utility

28Cited by

4References

6Claims

0Family size

Assignee

Puritan Equipment, Inc. · US

Inventors

Robert Forbes · Leawood, US
Gary Dean Herrick · Olathe, US
Robert J. Richter · Kingwood, US

Key dates

Filing date	Aug 13, 1975
Grant date	Jul 27, 1976
Priority date	—
Expiry date	Aug 13, 1995

Classification

Technology area (CPC A)Human Necessities
CPC primaryA62B7/00
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

Combined oxygen mask and smoke goggle apparatus particularly adapted for use by members of flight crews is provided in which a valve having a shiftable actuating element and including means presenting a passage is mounted atop the face-piece of the oxygen mask for automatic opening of such valve whenever the mask and goggles are both in place on the face of a user, so that the mask will normally be sealed against the escape of oxygen introduced thereinto but oxygen will be automatically introduced into the goggles for flushing smoke or the like therefrom whenever the goggles are being utilized along with the mask.

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