Torque testing instrument for tools, especially spanners

Details Torque testing instrument for tools, especially spanners Torque testing instrument for tools, especially spanners

1977-11-14

1979-10-23

Ruehl, Charles A.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73 1C, G01N 320

Patent

active

041716477

ABSTRACT:
A torque-testing instrument is disclosed for testing tools such as spanners, wrenches and the like. The instrument comprises a measuring assembly, a reading device and means for transmitting measured values from the measuring instrument to the reading device. The tool is fastened in the testing instrument and subjected to a torque effect. A load cell produces an electrical charge signal constituting measured values proportional to the torque effect being transmitted within the instrument. The load cell comprises a piezoelectric load sensing element electrically connected to an electronic amplifier for the reading device.

REFERENCES:
patent: 3011332 (1961-12-01), Skidmore
patent: 3269175 (1966-08-01), Sprosty
patent: 3456485 (1969-07-01), Larson
patent: 3582691 (1971-06-01), Sonderegger et al.

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