Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1985-09-06
1986-05-06
Watson, Robert C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
B23P 1904
Patent
active
045862290
ABSTRACT:
After attachment of a tap member or the like to the bushing bearing to be removed, the inventive extractor hereof uses to advantage a pressure fluid, such as grease, to force the tap member with its attached bearing in an exiting direction from its blind hole, and if the force thereof is inadequate for this purpose, then provides for advancing the tap member, also in an exiting direction, along the threads of a rotated operative member disposed centrally of the tap member, said operative member being held by the pressure fluid against longitudinal movement so that the tap member and not said operative member partakes of this movement. Thus, the pressure fluid in effect serves as a "cushion" for the applied forces and, in this way, contributes to extraction of the bushing bearing without damage being caused to the bottom wall of the blind hole.
REFERENCES:
patent: 1381101 (1921-06-01), Albertson
patent: 4240191 (1980-12-01), Schroyer
patent: 4369569 (1983-01-01), Armstrong et al.
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