Tool for control and use of miniature screws and threaded fasten

Details Tool for control and use of miniature screws and threaded fasten Tool for control and use of miniature screws and threaded fasten

1985-10-22

1986-09-16

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

B25B 2308

Patent

active

046115153

ABSTRACT:
In combination with a miniature jewelers' screwdriver, or similar tool, a barrel made of a stiffly flexible material (preferably a specified plastic) incloses the shaft of the screwdriver. The barrel provides at its working or tip end a set of flexible elements combined with a head holding groove to provide a gripping head which securely holds miniature screws or similar fasteners registered with the screwdriver tip. At the barrel's other end a coil spring around the shaft of the screwdriver exerts pressure to extend the barrel's tip beyond the bit of the screwdriver so that it will act to engage and hold screw heads.

REFERENCES:
patent: 796154 (1905-08-01), Schulze
patent: 1300275 (1919-04-01), Johnson
patent: 2796100 (1957-06-01), Dierker
patent: 3707894 (1973-01-01), Stillwagon
patent: 4190091 (1980-02-01), Colognori

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