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. 18, 1986
Filed:
May. 10, 1984
Applicant:
Inventors:
Michael Ghibu, Puchheim, DE;
Volker Hartel, Germering, DE;
Carl Heynemann, Taufkirchen, DE;
Manfred Raubach, Olching, DE;
Assignee:
Metzeler Kautschuk GmbH, Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E04B / ;
U.S. Cl.
CPC ...
181286 ; 181288 ; 181291 ; 181294 ; 181295 ;
Abstract
A co-oscillating, volume-changing resonator in the form of a silencer, includes a lens-shaped housing formed of a material having a given flexural stiffness, the housing being arched defining an evacuated cup-shaped cavity formed therein, and a coating layer completely surrounding the housing, the coating layer being formed of a material having a flexural stiffness being at most one-third of the given flexural stiffness of the material of the housing.