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. 03, 2018
Filed:
Jun. 03, 2013
Applicant:
Koken Ltd., Chiyoda-ku, Tokyo, JP;
Inventor:
Yoshimitsu Mashiko, Tokyo, JP;
Assignee:
KOKEN LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62B 18/08 (2006.01); A62B 27/00 (2006.01); A62B 18/02 (2006.01); A62B 18/10 (2006.01); A62B 9/02 (2006.01);
U.S. Cl.
CPC ...
A62B 18/08 (2013.01); A62B 18/02 (2013.01); A62B 18/025 (2013.01); A62B 18/10 (2013.01); A62B 27/00 (2013.01); A62B 9/02 (2013.01);
Abstract
A respiratory protection device in which a plurality of filter units are provided. A respiratory protection device includes a plurality of filter units. Air flow paths that extend to the facepiece are provided in respective filter units. An inhalation port leading in the facepiece is provided at a portion where the air flow paths merge. The inhalation port can be temporarily closed by using an inspection valve included in the fit checker.