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. 06, 2019
Filed:
Aug. 09, 2013
Dräger Safety Ag & Co. Kgaa, Lübeck, DE;
Dräger Safety AG & Co. KGaA, Lübeck, DE;
Abstract
A breathing apparatus includes a compressed air source with a compressed air source valve, a breathing regulator with a pressure reducer and a demand valve, a breathing mask connected to the demand valve at a first inlet connector, a second air source, a switching mechanism having an actuating member for switching between the compressed air source and the second air source and an exhalation valve, on the breathing mask, movable between a higher internal pressure in a second operating state than in a first operating state. The actuating member is provided on the breathing regulator. The switching mechanism, upon being switching to compressed air breathing, activates the lung-governed demand valve and adjusts the exhalation valve to the second operating state. Upon switching to breathing via the second air source, the lung-governed demand valve is deactivated and the exhalation valve () is adjusted to the first operating state.