Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means
Patent
1979-10-25
1984-01-24
Mackey, Robert
Tool driving or impacting
Automatic control of power operated means
Tool advance causing or controlling means
81470, B25B 23145
Patent
active
044270771
ABSTRACT:
A portable fastening tool of the type incorporating torque and angle sensors is connected to a data processor which analyzes the torque and angle sensings and generates a shut off signal to terminate tightening. The tool is powered and includes a fluid motor typically energized from a remote source of high pressure air. The data processor is energized by either a battery or an AC source. Termination of tool operation is effected by energizing a solenoid in response to a shut off signal generated by the data processor. In a battery operated embodiment, tool operation is initiated by manual depression of an operating lever while tool termination is effected automatically in response to the shut off signal. This mode of operation reduces the number of required batteries, prolongs battery life and reduces the number and size of electrical components in the tool.
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Mackey Robert
Rockwell International Corporation
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