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:
Feb. 28, 1995
Filed:
Mar. 26, 1993
Applicant:
Inventors:
Walter R Kepley, III, Gaithersburg, MD (US);
Dana J Greer, Frederick, MD (US);
Richard A Shields, Jr, Bellevue, WA (US);
Assignee:
Claircom Communications Group, L.P., Seattle, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379438 ; 379433 ;
Abstract
A one-piece, molded subassembly with a near-field acoustic chamber and a far-field acoustic chamber on either side of a centrally disposed microphone. A slightly-flared passage through the subassembly couples the far-field acoustic chamber to an exterior port in order to provide noise cancellation. A cord passage in the subassembly is directed in three mutually orthogonal directions so that a strain on the cord is not transmitted beyond the subassembly where it initially enters the handset.