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:
Apr. 02, 1985
Filed:
May. 06, 1982
Applicant:
Inventor:
Robert Ingalls, Epping, NH (US);
Assignee:
Gentex Corporation, Carbondale, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ; H04M / ; A62B / ;
U.S. Cl.
CPC ...
179 82 ; 73652 ; 12820119 ; 381 87 ; 1791 / ; 1791 / ; 179157 ;
Abstract
A local external communication system for use by a person wearing a mask covering the nose and mouth and in sealing engagement with the face in which an assembly secured to the outer surface of the mask without in any way affecting the integrity of the mask seal generates an output signal in response to the wearer's voice. The output signal is fed to a speaker carried on the wearer's body to produce an output which is audible to other persons in the vicinity of the wearer.