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. 11, 1998
Filed:
Apr. 17, 1996
Adrian Peter Wivagg, Tolland, CT (US);
Karl Heinz Haslinger, Bloomfield, CT (US);
Combustion Engineering, Inc., Windsor, CT (US);
Abstract
In order to support a shroud against bending, shear, stress and torsion, straps are placed in strategic positions with respect to cracks or like types of weaknesses which have been detected, and fastened in place using a suitable fastening technique. Holes are formed using an EDM technique in cooperation with supports for an EDM placed on the straps, and bolt units which have an expanding portion are inserted into the holes, torqued and expanded in a manner which fastens the strap to the shroud. A temperature responsive bimetallic strain system which produces a clamping force, is created by forming the straps of a material which has a lower expansion coefficient than the shroud material. As the reactor heats, the expansion differential tensions the straps and produces a clamping force.