Attachment for power tool

Details Attachment for power tool Attachment for power tool

1983-10-06

1989-06-13

Yost, Frank T.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

7386232, 192107M, 464 51, B23Q 500

Patent

active

048383619

ABSTRACT:
An attachment for power driven torque tools for measuring and limiting the torque developed thereby, which comprises a drive shaft and a driven shaft, each supporting a transverse plate at the inner end thereof, and a flexible mass operatively interposed between said plates for transmitting force from said drive shaft to said driven shaft, while said tool fastener is freely operational and for developing a measurable flexion therewith in when said driven shaft encounters resistance from the fastener associated therewith. The flexion is detected by a variable resistor which transmits a value to a control circuit for comparison against a preset value and activation of a power shut off when said transmitted value attains a preset relationship to said preset value.

REFERENCES:
patent: 3129300 (1964-04-01), Moyles
patent: 3166935 (1965-01-01), Sundt
patent: 3453874 (1969-07-01), Cline
patent: 3537275 (1970-11-01), Smith
patent: 3946603 (1976-03-01), Houvouras
patent: 4055080 (1977-10-01), Farr et al.
patent: 4250983 (1981-02-01), Handke

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