Driving tool with dual-position handle and locking means therefo

Details Driving tool with dual-position handle and locking means therefo Driving tool with dual-position handle and locking means therefo

1990-08-17

1992-04-07

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

81440, 81450, B25B 1500

Patent

active

051016966

ABSTRACT:
This invention relates to a driving tool having a dual-position handle for turning screws, nuts, bolts and the like. In the first of the two operating positions, the handle is locked in longitudinal alignment with a drive shaft for fast operation substantially in the manner of a common, ordinary screwdriver or nutdriver for as long as the work piece is relatively easy to turn. When the turning operation becomes more difficult as the work piece is progressively tightened and a means for applying additional torque would be desirable and of considerable advantage, such as during the last tightening turns, the handle may be unlocked and pivoted from its first operating position to a second operating position whereby it intersects the longitudinal axis of the drive shaft by as much as a 90-degree angle, thereby providing a means whereby the amount of torque that can be applied is substantially increased. Such increased torque would also be extremely advantageous in breaking loose certain work pieces, such as screws or nuts that have become rusted in place and resist removal with an ordinary screwdriver or nutdriver.

REFERENCES:
patent: 428662 (1890-05-01), Bartlett
patent: 903549 (1908-11-01), Dood
patent: 1036379 (1912-08-01), Tibbals
patent: 1215308 (1917-02-01), Johnson
patent: 3773094 (1973-11-01), Kuenzel
patent: 4590824 (1986-05-01), Cushman

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