Tool for cutting locking cups from guide tube mounting screws in

Details Tool for cutting locking cups from guide tube mounting screws in Tool for cutting locking cups from guide tube mounting screws in

1986-01-24

1987-09-01

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Frictionally engaging sides of opening in work

29400N, 294264, 29723, 29DIG26, 376260, 408129, 4082035, 408 67, B23B 4100, B23B 4718

Patent

active

046905936

ABSTRACT:
A cutting tool is manually operable from above the water level in a reactor cavity pool to sever locking cups from the socket-head cap screws which hold guide tubes to the upper support plate of the upper internals of the reactor. The tool includes a support assembly adapted to be mounted on the guide tube. A motor frame is mounted on the support assembly for limited vertical movement with respect thereto and carries a hydraulic motor coupled by a vertically depending shaft to a tubular cutter for rotating same about its axis. The shaft extends through an opening in the support assembly and through a locating tube which surrounds the cutter and is receivable over the associated locking cup when the support assembly is mounted in place. A drive screw is coupled to the frame and to a shaft which extends up to the coupling tube to a manually operable crank to effect vertical movement of the frame and the cutting means coaxially with respect to the locking cup to sever its top wall from its side wall.

REFERENCES:
patent: 1941551 (1934-01-01), Gjertsen
patent: 2814238 (1957-11-01), Schupner
patent: 3286553 (1966-11-01), Spencer et al.
patent: 4011024 (1977-03-01), Nakano et al.
patent: 4231690 (1980-11-01), Burns
patent: 4590671 (1986-05-01), Havoic-Conroy

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