The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 1997
Filed:
Sep. 01, 1995
Applicant:
Inventors:
Linsey J Swann, Vancouver, B.C., CA;
Donald A McLean, Vancouver, B.C., CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62B / ;
U.S. Cl.
CPC ...
12820617 ; 12820527 ; 12820523 ; 12820516 ; 12820427 ;
Abstract
The personal emergency breathing system includes a canister with a filtration unit for supplying filtered ambient air to a gas mask. The mask includes a fitting from which a regulator and hose coupled to an air tank may be removed after exhaustion of the supply of air and to which the canister is coupled to supply filtered ambient air to the user. Upon removal of the canister from the mask, the canister affords an indication of prior use of the canister and is simultaneously disabled from resecurement to the gas mask.