Metal working – Means to assemble or disassemble – Nuclear device
Patent
1993-10-21
1995-03-28
Vo, Peter Dungba
Metal working
Means to assemble or disassemble
Nuclear device
29906, 376261, 901 39, B23P 1904
Patent
active
054004985
ABSTRACT:
An apparatus is presented for removing the keys smoothly and reliably from support grids of a fuel assembly. The apparatus performs the task of removing the keys, which had been inserted into the grid through the opening sections of the grid, and enables mechanization and automation of the key removal operation. The apparatus has a robotic arm including a pair of parallel grid support members freely movably disposed at the end of the robotic arm for clamping onto the side edges of the grid. The apparatus further includes a key rotation device disposed on the support arm for engaging with and rotating the keys; a key moving device disposed on the grid support members so as to hold the keys and move the keys in the direction of the key axis.
REFERENCES:
patent: 3077361 (1963-02-01), Tait et al.
patent: 3887980 (1975-06-01), Yates et al.
patent: 3894327 (1975-07-01), Jabsen
patent: 4913617 (1990-04-01), Nicholson
patent: 5068081 (1991-11-01), Oyama et al.
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Mark Rosheim "The 2-Roll Gripper" Robotics Age, Jan./Feb. 1983, pp. 32-38.
Patent Abstracts of Japan, vol. 14, No. 525 (P-1132), Nov.19, 1990, JP-A-02 221 890, Sep. 4, 1990.
Inada Hitoshi
Miwa Nobuo
Ohuchi Katsunori
Dungba Vo Peter
Mitsubishi Nuclear Fuel Co.
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