Torque sensor

Details Torque sensor Torque sensor

1987-06-15

1988-11-15

Levy, Stewart J.

Measuring and testing

Dynamometers

Responsive to torque

324208, 324226, 324251, G01L 310

Patent

active

047840021

ABSTRACT:
A torque sensor comprising a first shaft having a fore end portion which is constructed such that a displacement of torsion thereof occurs; a second shaft connected to the first shaft through the fore end portion; a plurality of first magnetic segments each having a N-pole as a fixed magnetic pole and second magnetic segments each having a S-pole as a fixed magnetic pole; a plurality of first magnetism pickup path members and second magnetism pickup path members corresponding in number to the N-pole of the first magnetic segments and the S-pole of the second magnetic segments, respectively; and a magnetism detecting element provided in the first shaft so that it does not contact with the first shaft and adapted for detecting change in magnetic flux passsing through the first and second magnetism pickup path members. The displacement of torsion of the first shaft is detected by change in magnetic flux passing through the first and second magnetism pickup path members when the N-pole of the first magnetic segment is displaced toward the first or second magnetism pickup path member.

REFERENCES:
patent: 3170323 (1965-02-01), Kuhrr et al.
patent: 4119911 (1978-10-01), Johnson, Jr.
patent: 4448275 (1984-05-01), Kitagawa et al.
patent: 4682104 (1987-07-01), Lombard et al.
patent: 4724710 (1988-02-01), Murty

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