Flat ended double cube shaped tipped, screwdriver system

Details Flat ended double cube shaped tipped, screwdriver system Flat ended double cube shaped tipped, screwdriver system

2005-09-27

2005-09-27

Smith, James G. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

C081S438000

Reexamination Certificate

active

06948408

ABSTRACT:
A sure grip screwdriver system comprises a shaft. The shaft has a handle end and a working end. The shaft has a working inner portion and a working outer portion. The working inner portion is adjacent to the handle end. The working outer portion is adjacent to the working end. The working outer portion further has a generally cube-shaped configuration of a first smaller size. The working inner portion further has a generally cube-shaped configuration of a second larger size. Last provided is a shaft support. The shaft support has a recess at one end to receive the handle end of the shaft.

REFERENCES:
patent: 975285 (1910-11-01), Robertson
patent: 2397216 (1946-03-01), Stellin
patent: 3463209 (1969-08-01), Podolsky
patent: 3888144 (1975-06-01), Parsons
patent: 4258596 (1981-03-01), Bisbing et al.
patent: 4380942 (1983-04-01), Fenton
patent: 4436005 (1984-03-01), Hanson
patent: 5351586 (1994-10-01), Habermehl et al.

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