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:
Aug. 25, 2009
Filed:
Mar. 09, 2006
Applicants:
Hans Matthiessen, Bad Schwartau, DE;
Kai Kück, Hamburg, DE;
Inventors:
Hans Matthiessen, Bad Schwartau, DE;
Kai Kück, Hamburg, DE;
Assignee:
Dräger Safety AG & Co. KGaA, Lübeck, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M 16/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A compressed air respirator has prolonged operating time due to a rebreathing feature. The respirator has a compressed air reserve () with a connected demand air supply valve (), wherein the demand air supply valve () is connected with a reversible breathing gas reservoir () with adjustable volume. A rebreathing line () for the user of the apparatus has an expiration valve (), wherein the rebreathing line () is connected with the breathing gas reservoir ().