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:
May. 22, 1990
Filed:
Feb. 28, 1989
Applicant:
Inventors:
Hans-Werner Steinmetz, Schaffhausen, CH;
Fritz Reich, Uhwiesen, CH;
Assignee:
Georg Fischer Aktiengesellschaft, Schaffhausen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285 21 ; 285243 ; 285369 ; 285423 ;
Abstract
An adapting piece of thermoplastic material includes at least one welding sleeve portion with an electrical heating device formed by two heating mats arranged next to each other in circumferential direction. The welding sleeve portion has at least one radial incision extending in axial direction. By means of a clamping nut, the welding sleeve portion can be braced together with the heating elements against a tubular piece inserted in the welding sleeve portion. As a result, the pieces are fixed and supported before and during welding.