Phillips screwdriver with retractable slotted screwdriver blade

Details Phillips screwdriver with retractable slotted screwdriver blade Phillips screwdriver with retractable slotted screwdriver blade

1988-08-26

1989-09-19

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81444, 81461, B25B 2300

Patent

active

048670189

ABSTRACT:
A screwdriver for alternative use with Phillip head screws and slotted head screws is disclosed comprising a handle and a shank extending therefrom, the leading end of the shank terminating in a Phillips head screw engaging bit. The leading end portion of the shank is bifurcated by a rearwardly extending slot, and an elongated blade tipped with a slotted head screw bit is slidingly disposed along the slot. The blade is provided with a series of gear teeth along each edge and a nut is mounted around the shank for engagement with the blade teeth. The nut maintains the blade within the slot, and rotation of the nut controls the axial positioning of the blade to positions either forwardly or rearwardly of the Phillips bit.

REFERENCES:
patent: 411190 (1889-09-01), Haines
patent: 1057101 (1913-03-01), Wachter
patent: 2559206 (1951-07-01), Wienholtz
patent: 4328721 (1982-05-01), Massari
patent: 4488462 (1984-12-01), Wall

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