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. 06, 1976
Filed:
Nov. 25, 1974
Applicant:
Inventor:
Richard A Rutledge, Fraser, MI (US);
Assignee:
Gallagher-Kaiser Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; G10K / ;
U.S. Cl.
CPC ...
181 / ; 52145 ; 52615 ; 428 76 ; 428130 ; 428131 ; 428255 ;
Abstract
A sandwich type acoustical panel comprising a fibrous matrix, a diaphragmatic plastic skin overlying the matrix, a perforated metal face sheet spaced from the plastic skin, and means disposed between the metal sheet and plastic skin creating an air space therebetween. The space permits sound-activated air to be distributed over the plastic skin.