Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1995-05-15
1997-06-17
Watson, Robert C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
B23P 1904
Patent
active
056385900
ABSTRACT:
The invention is directed to a tool for removing and replacing the operating nut on a subterranean gate at the bottom of a valve tile. The tool comprises an elongated shaft having a handle at its upper end and a bifurcated member affixed to its lower end. The bifurcated member is configured to fit easily underneath the operating nut for lifting the nut off of the valve stem. A tubular slide is mounted on the shaft and is adapted to impact against a slide stop located below the handle. A rest is provided on the shaft for holding the tubular slide in spaced apart relation from the slide stop. A nut retaining member is adjustable mounted to the lower end of the shaft for holding a new operating nut on top of the bifurcated member during the replacement operation.
REFERENCES:
patent: 1873294 (1932-08-01), Cosgrove
patent: 2641831 (1953-06-01), Helton
patent: 4573378 (1986-03-01), McDonald
patent: 4582352 (1986-04-01), Filter et al.
patent: 4601077 (1986-07-01), Doty
patent: 4802391 (1989-02-01), Willhoite et al.
patent: 5004282 (1991-04-01), Perry
patent: 5181303 (1993-01-01), Gregg
patent: 5379986 (1995-01-01), Perez et al.
patent: 5504982 (1996-04-01), Sharp
Doherty John R.
Watson Robert C.
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