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. 27, 2007
Filed:
Apr. 27, 2004
Rico Weinert, Gommersheim, DE;
Alexander Schinko, Mannheim, DE;
Bernd Fuhrmann, Dudenhofen, DE;
Katja Hirschberger, Mutterstadt, DE;
Michael Burkart, Siebeldingen, DE;
Rico Weinert, Gommersheim, DE;
Alexander Schinko, Mannheim, DE;
Bernd Fuhrmann, Dudenhofen, DE;
Katja Hirschberger, Mutterstadt, DE;
Michael Burkart, Siebeldingen, DE;
Heinrich Gillet GmbH, Edenkoben, DE;
Abstract
A muffler with variable acoustic properties. A pressure cell with a diaphragm, a spring, a piston, a piston rod, a closing element on the piston rod, and a pressure connection line are integrated into a housing. The diaphragm is thermally insulated against the piston rod. Another layer of thermal insulation is provided between the closing element and the pressure cell.