Tightening control apparatus for a torque wrench

Details Tightening control apparatus for a torque wrench Tightening control apparatus for a torque wrench

1989-07-31

1992-05-19

Eley, Timothy V.

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to torque or speed condition

7386258, B23Q 500

Patent

active

051139499

ABSTRACT:
Disclosed is a tightening control apparatus for a torque wrench including a pressure detecting device for detecting an admission pressure supplied to a torque wrench. A pressure change detecting device determines a change in pressure detected by the pressure detecting device. A striking signal output device outputs a striking signal when the change reaches a reference value.

REFERENCES:
patent: 2978903 (1961-04-01), Nicholas
patent: 4163310 (1979-08-01), Sigmund
patent: 4418765 (1983-12-01), Mori et al.
patent: 4571696 (1986-02-01), Bitzer
patent: 4858312 (1989-08-01), Van Naarden
patent: 4887499 (1989-12-01), Kipfelsberger

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