Abstract: Reaction torque of a planetary gear type torque multiplier assembly is measured in apparatus which includes multiple stage torque multiplying apparatus and a torque readout meter which is operated by the reaction torque sensed. A reaction coupling arrangement operatively associated with a planetary torque multiplier includes a ring gear around which the planetary gears traverse. The ring gear is attached to a pivotable reaction torque cup. The reaction torque cup is biased by a pair of parallel extending deflection beams. As torque is applied, the ring gear deflects in accordance with reaction torque, and the amount of deflection is operatively coupled to the torque readout meter where an indication of torque is registered. The torque readout meter includes a stay set feature to maintain torque indications after the applied torque is terminated.

Abstract: Reaction torque between a drive shaft of a drive motor and the stationary housing of the drive motor is measured by apparatus which includes a torque readout meter and a torque multiplying arrangement. The apparatus includes a pivot sleeve member which is operatively connected to and pivots with the drive motor housing. A single deflection beam extends from the sleeve to the housing of the apparatus. The beam deflects when the sleeve pivots under the application of torque from the drive motor. The amount of deflection of the beam is operatively coupled to the torque readout meter where an indication of torque is registered. The torque readout meter includes a stay set feature to maintain the maximum readings after the applied torque is terminated. Two output shafts supply output torque. One output shaft applies multiplied torque and reduced rotational speed as compared to the other shaft which is directly connected to the drive motor.