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:
Mar. 19, 1996
Filed:
Oct. 21, 1993
Edmund Kruger, Lubeck, DE;
Thomas Neuber, Lubeck, DE;
Dragerwerk AG, Lubeck, DE;
Abstract
A breathing mask (1) with overpressure in the mask interior space (26) with a demand oxygen system (8) at a connection piece (32) of the breathing mask, with a switching member (11) at the demand oxygen system for generating the overpressure, and with an actuating element (23) acting on the switching member at the connection piece for switching on the overpressure. Switchover to overpressure operation is possible only when the breathing mask has been put on by providing an actuating element (23) led out of the connection piece (32) at a boundary area (6) between the breathing mask (1) and the face of a mask user (4) such that it is brought into the switched-on position when the breathing mask is put on by interaction with a portion of the surface of the face of the mask user (4).