Retraction system for a power tool drive spindle

Details Retraction system for a power tool drive spindle Retraction system for a power tool drive spindle

1993-02-12

1994-10-04

Herrmann, Allan D.

192 clutches and power-stop control

Stop mechanism

Limit stop

74 8915, 173 19, 408137, F16H 2512

Patent

active

053517970

ABSTRACT:
A system for retracting the drive spindle of a power tool includes a drive shaft which has a spline portion and a threaded portion. During normal operation, the drive spindle is rotated by interconnection of a drive gear with the splined portion of the drive spindle. When it is desired to retract the drive spindle, a drive spindle feed gear is locked into position and the threaded engagement of the drive spindle feed gear and the drive spindle causes the drive spindle to retract.

REFERENCES:
patent: 2254032 (1941-08-01), Fisher
patent: 2787355 (1957-04-01), Dodge
patent: 2796767 (1957-06-01), Carpenter
patent: 3459057 (1969-08-01), Bonneric
patent: 3803927 (1974-04-01), Lawler
patent: 4592681 (1986-06-01), Pennison et al.
patent: 4916963 (1990-04-01), Takei
patent: 4968239 (1990-11-01), Inaba et al.

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