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. 06, 1983
Filed:
Apr. 27, 1981
Donald L Gadberry, Huntington Beach, CA (US);
U.S.D. Corp., Santa Ana, CA (US);
Abstract
The following specification discloses a breathing gas mask having an elastomeric or plastic main body portion supported by a head band formed with a number of supporting straps for holding the mask to a user's face. The mask has a large viewing lens with an elongated protuberance in the form of a bead extending around the periphery of the viewing lens for purposes of protecting the major lens surface from exposure to impacts and scratching when it is laid on its face. The mask incorporates an oral nasal interior breathing cover with a speaking diaphragm in adjacent relationship thereto to allow for the intake of breathing gas into the oral nasal mask area while allowing for exhalation through a poppet valve in connected relationship to the oral nasal mask. The outer mask seal incorporates a flared interior seal member around the inner periphery thereof which incorporates a compound curve having variable cross sectional shapes around the periphery thereof to allow for a tightened seal to a user's face.