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:
Nov. 21, 1995
Filed:
Oct. 13, 1993
Applicant:
Inventors:
William K Ansite, Glendale, CA (US);
David N Pennell, Apple Valley, CA (US);
Assignee:
Gentex Corporation, Rancho Cucamonga, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62B / ; A62B / ;
U.S. Cl.
CPC ...
12820524 ; 12820525 ; 12820712 ;
Abstract
A pressurized breathing system enabling the execution of the Valsalva maneuver. A breathing mask has an inhalation valve and an exhalation valve. A Valsalva valve when in its normal position does not interfere with the regular performance of the system. When it is activated, it holds the exhalation valve closed. An exhalation effort of the wearer then accomplishes the Valsalva maneuver against the closed inhalation valve.