Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1994-09-15
1996-05-07
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 55, 74378, B25B 2100
Patent
active
055135463
ABSTRACT:
A device for fastening and loosening threaded members which has a socket mechanism at its forward end for engaging the threaded member and in which the torque of a motor rotatable in one direction is transmitted to the socket mechanism via a rotation transmission route including a planetary gear mechanism, forward-reverse rotation changing assembly and bevel gear mechanism. The bevel gear mechanism comprises a drive bevel gear coupled to the motor, and a pair of driven bevel gears opposed to each other in orthogonal relation to the axis of the drive gear and aligned with the axis of the planetary gear mechanism, the driven bevel gears being in mesh with the drive gear. The rotation changing assembly comprises an output shaft rotatably extending through the driven gears, and engaging means for selectively engaging one of the driven gears with the output shaft for the engaged gear to rotate with the shaft or disengaging the gear from the shaft. The output shaft is coupled to the planetary gear mechanism.
REFERENCES:
patent: 3739659 (1973-06-01), Workman, Jr.
patent: 3818855 (1974-06-01), Shimanckas
patent: 4106371 (1978-08-01), Akiyoshi et al.
patent: 4505170 (1985-03-01), Van Laere
patent: 4653338 (1987-03-01), Yeomans
patent: 5110312 (1992-05-01), Higby
Fukuhara Shinji
Ikeda Seiji
Maeda Metal Industries Ltd.
Meislin D. S.
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