Screwdriver helper

Details Screwdriver helper Screwdriver helper

2008-06-16

2010-06-29

Meislin, D. S (Department: 3727)

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

C081S462000, C081S451000, C081S177200, C081S180100

Reexamination Certificate

active

07743687

ABSTRACT:
A screwdriver helper includes a handle, a guide, and a bit. The handle defines a through hole therein. The guide is affixed to the handle. The guide comprises a top surface, a bottom surface, and a through guide hole defined between the top surface and the bottom surface. The top surface is faced to the handle. The guide hole is corresponding to the through hole of the handle. An axis of the guide hole is perpendicular to the bottom surface. The bit is positioned in the guide hole. The bit comprises a tip and a head. The tip is in a shape of a screw head. The head defines slots in a top end thereof. The bit is movable along the axis of the through guide hole. The screwdriver helper helps screwdriver to lock screws firmly.

REFERENCES:
patent: 2621688 (1952-12-01), Wales
patent: 4598614 (1986-07-01), Kipp
patent: 5370022 (1994-12-01), Rodriguez et al.
patent: 5462436 (1995-10-01), Beaty

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