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:
Aug. 31, 2004
Filed:
Dec. 19, 2002
Christoph Bank, Lehrte, DE;
Paul Cerny, Wennigsen, DE;
Gerhard Thurow, Garbsen, DE;
Peter Gönnheimer, Weinstadt, DE;
Joachim Frey, Schorndorf, DE;
ContiTech Luftfedersysteme GmbH, Hannover, DE;
Abstract
The sleeve-shaped rolling-lobe flexible member ( ) of a rolling-lobe spring ( ) is made of elastomeric material and is provided with a reinforcement layer. The ends of the sleeve-shaped rolling-lobe flexible member ( ) include neither beads nor cores. The rolling-lobe flexible member ( ) is attached pressure-tightly to a cover ( ) functioning as a connecting part and/or to a roll-off piston ( ) of the spring ( ). This pressure-tight attachment is achieved in that each clamping region ( ) of the connecting part (cover and/or roll-off piston ) is provided with a drawn-in connecting surface having at least one peripherally-extending raised portion ( ). Clamp rings ( ) are assigned to corresponding clamping regions ( ) of the connecting parts ( ). The clamp rings ( ) have respective peripherally-extending recesses ( ). The peripherally-extending raised portion ( ) provided at the attachment surface of the corresponding connecting part ( ) and/or the peripherally-extending recesses ( ) located in the corresponding clamp rings ( ) are configured to have a rectangular cross section whereby a form-tight connection of the reinforcement layer in combination with a redirection thereof results during the clamping process.