Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to stress in body or material
Patent
1975-01-14
1977-09-13
Schaefer, Robert K.
Electricity: motive power systems
Automatic and/or with time-delay means
Responsive to stress in body or material
318 6, 73143, 73136R, 254173B, H02P 700
Patent
active
040485471
ABSTRACT:
The invention is a device for controlling and adjusting the tension in the cable of mooring winches or cranes by measuring the torque exerted on a speed reducer having at least one intermediate gear-train, constituted of a pinion and a larger toothed-wheel integrally connected together. The device is characterized in that this intermediate gear-train rotates freely on two bearings supported by a stationary shaft concentric with the intermediate set, which stationary shaft is carried by two fixed supports located outside the bearings. The shaft also carries at least one pair of stress gauges secured between the bearings on two diametrically opposed generatrices of the shaft which are located in the same axial plane as the resultant compression force exerted on both bearings by the two tangential forces applied on the meshing teeth of the pinion and of the wheel of the intermediate gear-train. These stress gauges measure the bending moment on the stationary shaft by modulating an electric current, said bending moment being directly proportional to the resisting torque, and said current regulating said torque by way of responsive means acting on a motor driving said intermediate gear-train.
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Charonnat Henri Marie Dominique
Gaschet Michel Marceau
Havard Jean Francois Pierre Marie
Brissonneau et Lotz
Feldhaus John J.
Schaefer Robert K.
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