Screwdriver having plural kinds of driver pins

Details Screwdriver having plural kinds of driver pins Screwdriver having plural kinds of driver pins

1996-03-26

1997-10-07

Smith, James G.

Tools

Handle for tool

Having storage compartment

81439, 811774, B25G 108

Patent

active

056736002

ABSTRACT:
A screwdriver has a plurality of driver pins or different kinds where the shapes of the point portions are different from one another, and connecting shafts connected to the driver pins through universal joints, respectively. The driver pins are provided with spline grooves. Actuating shafts are also connected to the connecting shafts through universal joints, respectively. These members are housed within a cover and are guided upward and downward through the interior walls of the cover. The respective actuating shafts are upwardly energized by springs. Only one of the second shafts is selected and pushed down against the energizing means by a solid cam. The cover is provided with a single hole at a bottom end of the cover, and the single hole allows only one of the driver pins to pass through. The surfaces of the single hole are provided with a spline which is engageable with the longitudinal spline grooves of each of the driver pins.

REFERENCES:
patent: 2635661 (1953-04-01), Egan
patent: 4572038 (1986-02-01), Graham
patent: 4716795 (1988-01-01), Corona et al.
patent: 5337637 (1994-08-01), Bih-Lien

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