Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1989-06-09
1990-11-06
Watson, Robert C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
B23P 1904
Patent
active
049674609
ABSTRACT:
A tool for the extraction of bushings, bearings or other similar objects pressed into blind holes.
The preferred embodiment of the invention consists of a cylinder tube 1, with a blind head 2 attached, and sealed by blind head seal 5. The piston 3 is joined to the rod 4 which travels through the rod hole 12 and is sealed by the piston seal 6 in the inner diameter of cylinder tube 1.
The blind hole bushing and bearing remover is used by installing the appropriate nose piece (ball type, bushing/bearing removal nose piece 8; or self-threading, tapered type, bushing/bearing removal nose piece 17) into the bushing or bearing to be removed. Pushing media (grease) is introduced under pressure, and travels through check valve (grease fitting) receptacle and linear hole 7, thus moving piston 3, and extending rod 4 through the appropriate nose piece. When rod 4 makes contact with the bottom of the blind hole, the nose piece then contacts/engages the bushing/bearing resulting in a lifting force on the bushing/bearing, which lifts the bushing/bearing from the blind hole.
REFERENCES:
patent: 4280274 (1981-07-01), Filer
patent: 4507837 (1985-04-01), Hinkle
patent: 4586229 (1986-05-01), Pendola
patent: 4724608 (1988-02-01), Parrott
Nelson Jerry W.
Runyan Kenneth D.
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