Chain saw

Details Chain saw Chain saw

1992-01-16

1993-06-01

Watts, Douglas D.

Cutlery

Combined cutlery or combined with ancillary feature

With means to apply transient fluid to tool

30383, B25F 300

Patent

active

052148645

ABSTRACT:
The prime mover of a chain saw has an output shaft passing through the body of an oil pump. A fixing screw is inserted through an inserting hole provided in the body and is screwed into a threaded hole provided on the side of the prime mover. A cover plate, covering the area tip of the output shaft, is press fit onto the output shaft. The inserting hole is made as a threaded hole having a diameter through which the fixing screw is freely insertable but is also adapted to receive a removing screw which is larger in diameter than the fixing screw, and which abuts against the side of the prime mover. As a result, the inserting hole can be used in common also as the oil pump removing screwed hole and no extra removing screwed hole is required to be provided.

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patent: 2748810 (1956-06-01), Strunk
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patent: 3448829 (1969-06-01), Rauh et al.
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patent: 3938622 (1976-02-01), Densow
patent: 4662071 (1987-05-01), Hoppner
patent: 4813139 (1989-03-01), Nagashima
patent: 4847999 (1989-07-01), Nagashima
patent: 4884340 (1989-12-01), Newman
patent: 4893407 (1990-01-01), Lane
patent: 4928390 (1990-05-01), Gassen et al.
patent: 4945637 (1990-08-01), Anderson

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