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. 29, 1993
Filed:
Jun. 19, 1991
Lothar Brauer, Berlin, DE;
Klaus-Dieter Dahrendorf, Berlin, DE;
Volker Hunnebeck, Berlin, DE;
Klaus Haertle, Berlin, DE;
Werner Mascher, Berlin, DE;
Udo Mushold, Berlin, DE;
Klaus Pampuch, Berlin, DE;
Ulrich Timm, Berlin, DE;
Bernd Woicke, Berlin, DE;
Stefan Zloczysti, Berlin, DE;
Auergesellschaft GmbH, , DE;
Abstract
A self-contained portable personal breathing apparatus that has a casing housing a canister containing an oxygen evolving chemical. The casing is disposed inside a cover which is disposed inside a bag. The cover and the casing form a thermal insulating pocket between them, and with the cover material and the casing material, also made of thermally insulating material, a triple layer of thermal insulation is formed around the canister to protect oxygen produced therein from the heat of reaction of the chemical in the canister. A heat exchanger is situated atop the canister to further cool oxygen before inhalation, and breathing tube extends from the bag to the user for channeling exhaled breath and oxygen.