Calibration hand tool

Details Calibration hand tool Calibration hand tool

1995-03-24

1996-09-24

Little, Willis

Tools

Wrench, screwdriver, or driver therefor

Machine

81 60, 81438, B25B 1700

Patent

active

055579914

ABSTRACT:
An improved driving hand tool allows for precisely adjusting or calibrating small electronic or mechanical components. The tool may be used to adjust, for example, the resistance of a potentiometer, the frequency of a crystal oscillator, or the fuel flow rate of a carburetor. The tool includes a tumbler which drives a tool bit shaft through a reducing gearset. The gearset has a 90.degree. shaft angle so that the tumbler rotates about an axis which is not parallel to the rotational axis of the tool bit. In this manner, rotation of the tumbler does not rotate the body of the tool which enables the tool to be held and operated easily with only one hand.

REFERENCES:
patent: 1645570 (1927-10-01), Anderson
patent: 2483563 (1949-10-01), Rock
patent: 2721591 (1955-10-01), Criswell
patent: 2764048 (1956-09-01), Thompson
patent: 3214992 (1965-11-01), Dietrich
patent: 3315545 (1967-04-01), Schnoebelen
patent: 3580097 (1971-05-01), Van Dalen
patent: 3823755 (1974-07-01), Sheffield
patent: 3992964 (1976-11-01), Osmond
patent: 4048874 (1977-09-01), Riches
patent: 4846027 (1989-07-01), Lu
patent: 5033336 (1991-07-01), Chia-Tsai
patent: 5289743 (1994-03-01), Cirami

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