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:
Jan. 14, 1992
Filed:
Mar. 05, 1990
Walter Vanselow, Heroldsbach-Thurn, DE;
Siemes Aktiengesellschaft, Munich, DE;
Abstract
A repair lining for a heat exchanger tube includes a sleeve having ends. A tubular basic body is disposed in the sleeve and has ends protruding beyond the ends of the sleeve. One of the ends of the basic body has a top part being supported on the sleeve and the other of the ends of the basic body has a thread formed thereon. A nut is disposed on the thread for bracing the repair lining in the heat exchanger tube. At least one clamping ring is disposed on one of the ends of the basic body between the sleeve and the top part, and at least one clamping ring is disposed on the other of the ends of the basic body between the sleeve and the nut. The clamping rings have a conical shape in an initial relaxed condition being changed into a flattened shape with an enlarged diameter by relative motion between the basic body and the sleeve. A method for repairing a heat exchanger tube with a repair lining includes introducing a repair lining into the heat exchanger tube, and tightening the nut with a tool for axially enlarging the clamping rings and substantially fluid-tightly connecting the basic body to the heat exchanger tube.