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:
Jan. 16, 2018
Filed:
Sep. 03, 2008
Garry J. Walker, Stockton-on-Tees, GB;
Desmond T. Curran, Durham, GB;
Mark A. J. Fernandes, Warwickshire, GB;
Garry J. Walker, Stockton-on-Tees, GB;
Desmond T. Curran, Durham, GB;
Mark A. J. Fernandes, Warwickshire, GB;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An air flow control system for a respirator () is described which includes a shell that defines a breathable air zone for a user () wearing the respirator (), an air delivery conduit () within the shell of the respirator, and a valve member () moveable relative to the air delivery conduit and within the shell to vary the air flow through the air delivery conduit. The air flow control system also includes an outer device () outside of the shell of the respirator that is rotatable by a user () of the respirator while wearing the respirator to control movement of the valve member.