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. 20, 1999
Filed:
Sep. 24, 1996
Joseph G Reischel, Woodbury, MN (US);
Vaughn B Grannis, Inver Grove Heights, MN (US);
David P Knivsland, North St. Paul, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A full face respirator mask (10) includes a face shield portion (12) with the seal (20) surrounding a lens portion (14). Inhalation ports (16) and an exhalation port (18) are formed at the lower portion of the lens (14). A center adapter (30) includes a nose cup (40) and an exhalation valve (38) in the center orifice (18). The inhalation ports (16,116) are placed at each side of the exhalation port (18) and include connector portions (50,150) formed with the lens (14) or ultrasonically welded to the lens (14). The connector portions (50) include male connectors (58) in a first embodiment and female connectors (150) in a second embodiment receiving complementary formed connectors of a breathable air source.