Power-operated gear-driven box wrench

Details Power-operated gear-driven box wrench Power-operated gear-driven box wrench

1979-09-17

1982-04-06

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5729, B25B 1700

Patent

active

043229891

ABSTRACT:
An improved power operated gear-driven box wrench is described in which a tool module containing the work engaging ring gear and both its drive gear and drive shaft can readily be slipped on or off a separate power module containing a motor and drive shaft. Rotational coupling of the tool module drive shaft and that on the power module is accomplished through slideable engageable couplers which are keyed to rotationally lock the drive shafts together. The tool module and the power module also are slideably engaged through coupling collars which are keyed to prevent independent rotation. The ease of changing the tool module permits the operator to select a work engaging gear ring that fits the work without the use of a compensating socket, thus minimizing the work clearance required for use of the wrench.

REFERENCES:
patent: 1346716 (1920-07-01), Lee
patent: 2629278 (1953-02-01), De Note
patent: 2764048 (1956-09-01), Thompson
patent: 3430510 (1969-03-01), Hendrickson
patent: 3987692 (1976-10-01), Lesner et al.
patent: 4171651 (1979-10-01), Dacunto

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