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. 01, 1979
Filed:
Mar. 18, 1977
Donald J Kaminski, Trafford, PA (US);
Charles H Boyd, Plum Borough, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A lateral restraint device for nuclear fuel racks which can accommodate differential thermal expansion between the racks and a containing enclosure. The restraint includes a piston, movable within a cylinder, joined to one or more support pads which contact the wall of the enclosure. A spring is also provided within the cylinder to act upon the piston. The piston is sized to provide a predetermined clearance or opening allowing controlled liquid flow into the cylinder. The piston can be held in a given position within the cylinder with the spring compressed to facilitate installation onto the side of a fuel rack, and subsequently positioned by the expanded spring. Relatively small differential expansion loads are accommodated by the moving piston and spring, while large loads, such as those imposed by a seismic occurrence, are resisted by the hydraulic fluid within the cylinder.