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:
Nov. 25, 1986
Filed:
Jun. 06, 1984
Richard A Green, Farmington Hills, MI (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A tool for positioning a lower guide tube of a reactor for replacement of old split-pin assemblies by new split-pin assemblies. The lower guide tube has an upper and a lower flange and has a length typically between 124 and 150 inches. The split-pin assemblies are secured in counterbores in the lower flange. The tool includes an upper deck and a lower deck. The LGT is suspended from the upper deck from pins which engage holes in the upper flange. With the LGT so suspended the lower flange extends into the lower deck in position to be processed for the replacement. A rotary hydraulic cylinder is provided in the upper deck to rotate the LGT in positions to be processed by other tools involved in the replacement and also so that both of the old split-pin assemblies which are spaced 180.degree. around the periphery of the LGT may be replaced by a single set of robotic tools. A hydraulic lift cylinder is also provided at the upper level to raise the LGT so that it clears the pins when the LGT is to be rotated. The lift cylinder also raises the LGT to clear pins, accessible to the crane which transports the LGT, on which the LGT is positioned temporarily and from which it is moved to the processing positioning pins. The lower deck has a clamp for clamping the lower flange during processing. There is also a pin-puller and expellor which is pivotal from an 'in' position, in which it is under a split-pin assembly being processed, in position to pull out a fragment of an old split-pin assembly and expel the fragment into a trash chute. The pin-puller and expellor has a plunger which serves to eject the fragment and in the absence of a fragment a split-pin in the counterbore serves to center the LGT for processing.