Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1982-04-09
1985-04-02
Schmidt, Frederick R.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29264, 29266, B23P 1904
Patent
active
045078386
ABSTRACT:
A tool for removing and replacing automobile wheelbearings without removing either the axle or the bearing housing and without applying pressure to the axle. A frame is provided which is adapted to be secured to the bearing housing. An extractor is movably connected to the frame to travel between an advanced and retracted position. When the frame is secured to the bearing housing, the advanced position of the extractor places it in the bearing housing between the axle and the central opening of the bearing, with the end of the extractor being past the bearing. The end of the extractor is operable between an expanded and retracted state. In its expanded state, the end of the extractor cannot be moved through the central opening of the bearing and thus moving the extractor to its retracted position while it is expanded will draw the bearing out of the housing. To insert a new bearing, the extractor is moved to its collapsed state after which the bearing is mounted on the extractor such that the extractor passes through the central opening of the new bearing. As the extractor is moved to its advanced position the extractor shoulder, which is larger than the central opening, presses the bearing into the housing. If desired, a thrusting ring can be placed between the shoulder and the bearing to avoid any friction which might occur between them.
REFERENCES:
patent: 1550285 (1925-08-01), Sherman
patent: 2310639 (1943-02-01), Johnson, Jr.
patent: 2373064 (1945-04-01), Stelzer
patent: 2614318 (1952-10-01), McCord
patent: 3611540 (1971-10-01), Gibu
patent: 3893216 (1975-07-01), Kushner
patent: 3986242 (1976-10-01), Kerr
patent: 4259774 (1981-04-01), Dolinski et al.
Schad Steven P.
Schmidt Frederick R.
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