Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor...
Patent
1990-06-12
1991-12-31
Hunt, Brooks H.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
376248, 376261, G21C 1700
Patent
active
050769979
ABSTRACT:
An inspection system has a pellet diameter inspecting station and an apparatus for transferring pellets past the station. The apparatus includes a stationary support track for aligning and guiding pellets in a row along a linear path, and a transfer mechanism operable through forward and reverse strokes. The transfer mechanism has first and second grippers actuatable between pellet gripping and releasing positions and operable to grip respective rearmost pellets in a first row of pellets to be advanced past the inspecting station and in a second row of pellets previously advanced past the inspecting station. The transfer mechanism is operable to move from an initial position through the forward stroke to advance the pellets at a constant velocity along the linear path. The transfer mechanism actuates the second gripper from its releasing to gripping position before actuating the first gripper from its releasing to gripping position and starts movement from the initial position along the forward stroke before the first gripper is so actuated such that a gap is formed between the previously advanced row of pellets and the row of pellets to be advanced so as to prevent buckling of pellets in the latter row. The transfer mechanism is also operable to actuate the grippers to release the pellets and move through the return stroke relative to the released pellets back to the initial position.
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DiGrande John T.
Huggins, Sr. Thomas B.
Lambert David V.
Roberts Elwyn
Carroll Chrisman D.
Hunt Brooks H.
Westinghouse Electric Corp.
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