Fluted tool

Details Fluted tool Fluted tool

1979-12-12

1981-06-02

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Plural pivoted jaws and handle-lever

81441, B25B 1302

Patent

active

042704189

ABSTRACT:
A tool for removing bungs and screws comprises a shank adapted for connection to a rotated drive and an enlarged head with transverse axial slots formed therethrough and an axial threaded bore defining a plurality of flutes. Each flute has a first flat axial side with a radial outer edge inclined outwardly toward the shank at an acute angle. The radial edge terminates in a flat relief surface extending at an increased acute angle toward the shank, and terminates in a flat clearance surface extending at a further increased angle. The relief surface terminates in a second flat axial side arranged at at least a 90 degree angle to the first flat side.

REFERENCES:
patent: 2445905 (1948-07-01), Busby
patent: 2619861 (1952-12-01), Wanamaker

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