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. 17, 1999
Filed:
Jun. 06, 1995
Applicant:
Inventors:
Ronald J Zdrojkowski, Pittsburgh, PA (US);
Frank V Blazek, Monroeville, PA (US);
John Raymond Pujol, Pittsburgh, PA (US);
Assignee:
Respironics, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62B / ; A61M / ; A61M / ;
U.S. Cl.
CPC ...
12820524 ; 12820423 ; 12820426 ;
Abstract
A flow regulating system including a valve and a method for maintaining a constant gas flow rate at varying gas pressure by means of differential gas pressure applied to opposed sides of a valve diaphragm.