Metal working – Method of mechanical manufacture – Repairing
Patent
1986-07-31
1988-07-12
Kyle, Deborah L.
Metal working
Method of mechanical manufacture
Repairing
294264, 29723, 29 26B, 29906, 376260, G21C 1900
Patent
active
047560673
ABSTRACT:
A replacement station includes an old split-pin-assembly (OSPA) removal stand and a new split-pin-assembly (NSPA) installation stand. The removal stand includes a saw and a drill. With the guide tube to which the OSPA is secured in the removal stand, the saw severs each OSPA below the flange which engages the base of the lower counterbore in the lower guide tube (LGT) separating the OSPA into a pin fragment and a second fragment including the flange and the remainder of the split-pin with the nut threaded into it. The second fragment remains secured to the LGT after the sawing operation. The guide tube is rotated so that the drill is coaxial with the shank of the pin of the second fragment. The second fragment is separated into a third fragment including the flange and a fourth fragment including the remainder of the pin and the nut both removable from the LGT. The installation stand has NSPA blades in which the new split pins are mounted. The LGT sans the OSPA's is positioned on the installation stand. The new nuts are mounted and torqued into the split pins with a long-handled runner and a torque tool permitting a measured torque to be applied to the new nut. Then the cups on the nuts are crimped by a long-handled crimping assembly which has fixed crimping jaws that produce the crimping by moving parallel to the wall of the cup.
REFERENCES:
patent: 2436251 (1948-02-01), Dobie et al.
patent: 2752671 (1956-07-01), Alyea
patent: 3654690 (1972-04-01), Hardin
patent: 4585613 (1986-04-01), Styskal et al.
patent: 4590671 (1986-05-01), Havoic-Conroy
patent: 4624042 (1986-11-01), Green
Hahn Joseph J.
Howell David A.
Kramer Arthur W.
Kyle Deborah L.
Wasil Daniel
Westinghouse Electric Corp.
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