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:
Feb. 26, 1980
Filed:
Apr. 24, 1978
Applicant:
Inventor:
Harold U Bartels, Corona, CA (US);
Assignee:
Bourns Medical Systems, Inc., Riverside, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
12820524 ; 137528 ; 251 611 ;
Abstract
A one-piece, integrally molded diaphragm for use in exhalation valves of respiratory apparatus to prevent the propagation of harmonic acoustic vibrations. High frequency oscillations are prevented from propagating by means of mechanical damping. The damper takes the form of a thin circular flutter sheet molded onto the face of the diaphragm and extending past the sealing area of a valve seat.