Torque transducer

Details Torque transducer Torque transducer

1991-06-26

1993-10-26

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to torque

73662335, G01L 302

Patent

active

052555674

ABSTRACT:
A torque transducer including: a ferromagneto-stricting device provided for a rotational shaft; a magnetic field supply device for supplying a magnetic field to the ferromagneto-stricting device; a sensing device for sensing the change in the magnetic permeability which has taken place due to torque acting on the rotational shaft; a fixed housing for rotatably supporting the rotational shaft via a bearing unit; and an electromagnetic shielding device for surrounding the magnetic field supply device and the sensing device to electromagnetically shield them. The magnetic field supply device comprises an exciting coil, while the sensing device comprises a sensing coil. The electromagnetic shielding device is supported by the fixed housing via an elastic holding member. A seal member is disposed outside the bearing unit. The fixed housing and the electromagnetic shielding device are electrically earthed.

REFERENCES:
patent: 4817444 (1989-04-01), Yagi et al.
patent: 4873874 (1989-10-01), Sobel
patent: 4885944 (1989-12-01), Yagi et al.
patent: 4899597 (1990-02-01), Yagi et al.
patent: 4907462 (1990-03-01), Obama et al.
patent: 5083359 (1991-01-01), Aminder et al.

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