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. 22, 1997
Filed:
Jun. 06, 1995
Applicant:
Inventors:
Manuel J Veiga, Tewksbury, MA (US);
Richard J Satin, Swampscott, MA (US);
Assignee:
Bradford Industries, Inc., Lowell, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 453 ; 264 464 ; 264 50 ; 264255 ; 264D / ; 156247 ;
Abstract
The present invention relates to a sound attenuation composite and a method for making the composite. The sound attenuation composite includes a barrier layer and an open cell foam layer loaded with a sound blocking filler. In one embodiment, the foam layer is filled with a barium sulfate filler. In another embodiment, a solid polyvinyl chloride barrier layer is loaded with barium sulfate, wherein 60 parts of barium sulfate is present in each 100 parts of polyvinyl chloride.