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:
Sep. 28, 2021
Filed:
Oct. 23, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Garry J. Walker, Norton, GB;
Andrew Murphy, Binchester Moor, GB;
Desmond T. Curran, Nevilles Cross, GB;
Derek A. Parkin, Newton Aycliffe, GB;
Thomas I. Insley, Lake Elmo, MN (US);
Mark A. J. Fernandes, Leamington Spa, GB;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A respirator has a shell that defines a breathable air zone for a user wearing the respirator. An air flow control system for the respirator has an air delivery conduit within the shell of the respirator, a valve member moveable relative to the air delivery conduit and within the shell to vary the amount of air flow through the air delivery conduit, and a valve actuator outside of the shell of the respirator. The valve actuator is manipulatable by a user of the respirator while wearing the respirator to control movement of the valve member.