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:
Nov. 02, 1976
Filed:
Sep. 15, 1975
Applicant:
Inventors:
Roy F Hodsdon, Lynchburg, VA (US);
Friedrich H Mann, Lynchburg, VA (US);
Henry A Schaefer, Lynchburg, VA (US);
Assignee:
General Electric Company, Lynchburg, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
179184 ; 181175 ;
Abstract
A grill for a loudspeaker has a relatively thick metallic plate with a loudspeaker opening and a plurality of T-shaped bars across the opening, and a relatively thin metallic plate with a loudspeaker opening and a plurality of U-shaped bars across the opening. The plates are mounted together so that the U-shaped bars are located between but spaced from the T-shaped bars to provide physical protection to and good acoustic qualities for the loudspeaker. The relatively thick metallic plate provides a good heat sink for electronic equipment.