Stanley Duane Bonner

US Patent:

50781308, Jan 7, 1992

Filed:

Jul 14, 1988

Appl. No.:

7/219302

Inventors:

Lucien F. A. Van Oosten - Arcadia CA
Stanley A. Bonner - San Dimas CA

Assignee:

Gentex Corporation - Pomona CA

International Classification:

A62B 1704

US Classification:

12820124

Abstract:

Protective headgear with a face shield which can be tilted up out of the way, and which when tilted downwardly can be placed in a standby position enabling free breathing of ambient air through a gap between a helmet and the face shield, and can be pressed back to create a seal to require breathing from a controlled source. A selector is mounted on the face shield to enable the wearer to make a quick and effective selection of breathing modes. A face seal can be mounted to the inside of the face shield to form an oro-nasal dam around the nose and mouth of the wearer to provide another seal, and a reduced plenum volume.