Manual hoist and traction machine

Details Manual hoist and traction machine Manual hoist and traction machine

1993-12-13

1996-09-17

Mansen, Michael R.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

188 712, 188251M, 188251A, 254357, 254375, B66D 114, B66D 502, F16D 5502, B60T 1110

Patent

active

055560784

ABSTRACT:
A manual hoist and traction machine wherein an outer diameter of a first lining plate constituting a mechanical brake is made smaller than an inner diameter of a driven disc of a handwheel. The outer diameter of a second lining plate and of a driven disc are made smaller than an inner diameter of a cylindrical portion of a braking ratchet wheel, and the first and second lining plates are formed of a lining raw material having improved performance with a compressive strength of 15 (Kgf/mm.sup.2) or more and a maximum strain of 12 (10.sup.-3 mm/mm) or more.

REFERENCES:
patent: 1729262 (1929-09-01), Chappelka
patent: 3885006 (1975-05-01), Hatch et al.
patent: 4218361 (1980-08-01), Searfoss et al.
patent: 4221364 (1980-09-01), Nishimura
patent: 4420067 (1983-12-01), Yamamoto et al.
patent: 4452649 (1984-06-01), Yoshioka et al.
patent: 4512555 (1985-04-01), Nakamura
patent: 4605105 (1986-08-01), Ogiwara
patent: 4664357 (1987-05-01), Nishimura
patent: 5266395 (1993-11-01), Yamashita et al.
patent: 5330036 (1994-07-01), Nishi et al.
patent: 5339931 (1994-08-01), Jacko et al.

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