Apparatus and method for determining torque and presenting digit

Details Apparatus and method for determining torque and presenting digit Apparatus and method for determining torque and presenting digit

1986-05-30

1988-12-20

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

73761, 7386273, 7386225, B25B 23144

Patent

active

047918390

ABSTRACT:
Apparatus and a method are presented for determining the torque load applied to a fastening element by a fluid powered wrench, and displaying a digital readout of the torque. The operating pressure of the wrench, after compensation for the temperature of the pressure transducer, is converted to a torque measurement by programmed microprocessor and the torque value is displayed on a digital readout. The system is useable with and adjusts for wrenches of several sizes by an input selector switch connected to the microprocessor.

REFERENCES:
patent: 3745820 (1973-07-01), Weiner
patent: 4211120 (1980-07-01), Tambini
patent: 4468968 (1984-09-01), Kee

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