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:
Sep. 20, 2005
Filed:
Jul. 28, 2003
Andreas Fleck, Garbsen, DE;
Olaf Kluth, Hannover, DE;
Andreas Fleck, Garbsen, DE;
Olaf Kluth, Hannover, DE;
ContiTech Luftfedersysteme GmbH, Hannover, DE;
Abstract
The invention is directed to a flexible pipe connecting unit which includes a part made of elastic workable material. The pipe connecting unit includes a wave-shaped or hose-shaped bellows () made of elastomeric material. The bellows () has respective projecting flange collars () at its respective ends. The flange collars () preferably are provided with a reinforcement insert () and annularly-shaped pipe connecting pieces (flanges) are disposed behind corresponding ones of the flange collars. The pipe connecting unit () coacts directly with weld-on flanges as counter flanges () without additional seals or corresponding joining locations. For this purpose, the end sealing faces of the flange collars () are partitioned in the radial direction by a peripherally extending slot (). In this way, at least two coaxial concentric annularly-shaped sealing surfaces (-I,-II) are formed. With outer weld-on or slip-on flanges (), only corresponding ones of the outer annular sealing Surfaces (-I) are in contact engagement and, when the counter flange () is a welding-neck flange, at least the outer sealing annular surface (-I) comes into contact engagement. A stabilization ring () can be implanted in the slot () of the flange collar () between the outer annular sealing surface (-I) and the inner annular sealing surface (-II).