Structure of drive section of power tool

Details Structure of drive section of power tool Structure of drive section of power tool

1994-02-04

1996-07-09

Rachuba, Maurina T.

Abrading

Frame or mount

Portable abrader

451163, B24B 2304

Patent

active

055339255

ABSTRACT:
An output axis of a motor has an eccentric portion, a vibratory arm is vibratably supported at its central portion, connecting section of said vibratory arm with the eccentric portion is formed in shape of two crotches, the eccentric portion and the vibratory arm are connected to each other in a manner that the eccentric portion is inserted between the two crotches of the vibratory arm, thereby rotational movement of the output axis of the motor is converted into vibrational movement of the vibratory arm, and at least one of contact portion formed on the outer circumfrential surface of the eccentric portion or contact portions respectively formed on the inside surface of each of two crotches is formed in shape of a curved surface.

REFERENCES:
patent: 2163018 (1939-06-01), Bernier
patent: 2350098 (1944-05-01), Decker
patent: 3136099 (1964-06-01), Tully et al.
patent: 4175359 (1979-11-01), Teague, Jr. et al.
patent: 4512207 (1985-04-01), Dancsik
patent: 4575973 (1986-03-01), Izumisawa
patent: 4703536 (1987-11-01), Livneh

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