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. 29, 1994
Filed:
Nov. 04, 1993
Applicant:
Inventors:
Marc Rehfeld, Ezanville, FR;
Michel Canaud, Paris, FR;
Assignee:
Saint Gobain Vitrage International, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B60J / ;
U.S. Cl.
CPC ...
428215 ; 428 34 ; 428415 ; 4284256 ; 428430 ; 52788 ; 181286 ; 181289 ; 296 9614 ;
Abstract
An acoustic glazing intended for land transportation vehicles and including first and second glass sheets separated by an interlayer region, wherein the acoustic transmission loss differs at most by 5 dB from a figure increasing of 9 dB per octave from 800 to 2000 Hz and of 3 dB per octave above that. As examples, double glazings or laminated glazings are presented featuring an interlayer with a pronounced damping. The acoustic glazing will then operate to effectively eliminate aerodynamic noises in moving vehicles.