Metal working – Means to assemble or disassemble – Nuclear device
Patent
1985-01-08
1987-01-27
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Nuclear device
29400N, 269 481, B23P 1900, B23P 1700, B23Q 1314
Patent
active
046385568
ABSTRACT:
A fixture for inserting locking tubes into locking positions in a top nozzle includes a tool guide with operable devices for locking the guide to the top nozzle such that openings in the guide are aligned above passageways in the adapter plate of the top nozzle. Resiliently deformable sleeves are disposed in the respective guide openings for retaining locking tubes stationarily therein. Each sleeve includes a lower internal ledge which a bottom edge of the locking tube disposed therein rests and an inside diameter smaller than the outside diameter of the locking tube such that the tube is mounted in a stationary position within the sleeve and an interference fit is maintained between the sleeve and the tube. Further, the fixture includes a tool holder mounting tube insertion tools each in the form of an elongated cylindrical plunger rod having a lower cylindrical portion of smaller diameter than an upper cylindrical portion such that a bottom shoulder is formed on the upper portion. Also, the lower portion has an outside diameter and length which allows it to extend through the locking tube in the sleeve within one of the guide openings and enter into the upper end portion of one guide thimble, when the tool holder is moved toward the tool guide, before the bottom shoulder on the upper portion contacts the upper end of the locking tube and forces it from the sleeve and eventually pushes it into the one guide thimble upper end portion.
REFERENCES:
patent: 3835520 (1974-09-01), Sismore
patent: 3986383 (1976-10-01), Petteys
patent: 4065953 (1978-01-01), Frentzen et al.
patent: 4321111 (1982-03-01), Jabsen
patent: 4506442 (1985-03-01), Alzmann et al.
Ferlan Stephen J.
Shallenberger John M.
Goldberg Howard N.
Nichols Steven
Westinghouse Electric Corp.
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