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:
Jun. 05, 2001
Filed:
Apr. 26, 1999
Herbert Foering, Solingen, DE;
Thomas Gigowski, Grevenbroich, DE;
Michael Berane, Langenfeld, DE;
Karl-Heinz Hartings, Langenfeld, DE;
Johannes Schurr, Bonn, DE;
Mannesmann AG, Düsseldorf, DE;
Abstract
A pipe coupling with a cylindrical pipe, whose smooth end section can be inserted into a fitting that has at least one sleeve-like area extending in the longitudinal direction. At least one sealing ring is arranged between the pipe outer wall and the fitting inner wall. The fitting and the pipe are connected securely to each other by an externally applied pressing tool that acts in a plastically deforming manner on at least one radial plane of the sleeve-like area of the fitting as well as the pipe section located under this. A metal sleeve, which can be placed over the pipe ends by force, is arranged between the pipe outer wall and the fitting inner wall. The fixed axial extension of the metal sleeve surrounds the pipe starting from the pipe end face, and the length of the metal sleeve is selected so as to correspond to the required overlap between the pipe and the fitting. This required overlap is attained when, after placement of the fitting onto the metal sleeve, or after insertion of the pipe and the metal sleeve into the fitting, the end face of the fitting facing the pipe coincides exactly with the end of the metal sleeve, and the sealing ring, seen in cross-section, is penetrated by the metal sleeve.