Wheel speed sensor

Details Wheel speed sensor Wheel speed sensor

1978-03-20

1979-10-16

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310168, 310266, H02K 2138

Patent

active

041714954

ABSTRACT:
A wheel speed sensor including an annular rotor fixed to a wheel for rotation therewith and having circumferentially distributed surface interruptions. A sensing device mounted near the rotor is fixed against rotation and includes a sensing portion opposable across an air gap to the surface interruptions of the rotor to produce a signal representing rotation of the surface interruptions past the sensing portion. The rotor and sensing portion are of complementary generally V-shaped cross section and are separated by a V-shaped air gap such that the output signal is substantially insensitive to relative motion between the rotor and sensing device in an axial plane of the rotor.

REFERENCES:
patent: 3549924 (1970-12-01), Klein
patent: 3564313 (1971-02-01), Goor
patent: 3832908 (1974-04-01), Abbott
patent: 3980913 (1976-09-01), Peterson
patent: 3984713 (1976-10-01), Presley

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