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:
Jul. 16, 2024
Filed:
Mar. 15, 2018
Applicant:
Shigematsu Works Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
SHIGEMATSU WORKS CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62B 18/10 (2006.01); A62B 18/02 (2006.01); A61M 16/20 (2006.01);
U.S. Cl.
CPC ...
A62B 18/10 (2013.01); A62B 18/02 (2013.01); A61M 16/208 (2013.01);
Abstract
In some embodiments, a positive pressure exhale valve for a breathing apparatus that opens when internal pressure of a face piece of the breathing apparatus reaches a predetermined positive level includes a valve body, a first spring for always contacting the valve body so as to force the valve body in closing direction, and a braking body for opposing the valve body across a gap and contacting the valve body when a vibration body formed by the valve body and first spring experiences self-excited vibration, thereby suppressing the self-excited vibration.