Torque transducer

Details Torque transducer Torque transducer

1980-03-11

1982-09-07

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to torque

7386228, G01L 312

Patent

active

043477488

ABSTRACT:
Apparatus for measuring torque (or functions derived therefrom or related thereto) transmitted by a shaft driven to rotate and connected to a load. The apparatus includes first and second optically flat, radiation reflecting, surfaces located on the shaft at respective first and second positions displaced from one another axially along the shaft and means for directing beams of radiation from a suitable source at the reflecting surfaces. There are first and second pick-up means spaced from the shaft and located to receive the radiation beams reflected by the respective first and second reflecting surfaces during rotation of the shaft and provide respective first and second outputs as a result of the radiation beams directed thereat by the reflecting surfaces. Signal processing circuit means associated with the first and second outputs provides an output interrelated with angular twist of the shaft at one of said first and second positions relative to the other. Direct reading of measurements obtained are readily provided and the energy radiation source means preferably a laser.

REFERENCES:
patent: 3309920 (1967-03-01), Cuthbert
patent: 3762217 (1973-10-01), Hagen
patent: 3897766 (1975-08-01), Pratt, Jr. et al.
patent: 3935733 (1976-02-01), Schindler

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