Sealing device and rotation detector

Details Sealing device and rotation detector Sealing device and rotation detector

2008-01-15

2008-01-15

Miller, William L. (Department: 3677)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S317000, C324S174000, C073S862193, C384S448000

Reexamination Certificate

active

07318589

ABSTRACT:
A pulser ring and a second seal ring are separately formed. When a multipolar magnetic rotor of the pulser ring is bonded to an outer circumferential face of an outer cylindrical portion of an annular core portion, the multipolar magnetic rotor is opposed to a magnetic sensor in the radial direction. Due to the above structure, the multipolar magnetic rotor can be strongly supported by an outer cylindrical portion of the annular core portion. Therefore, even when a rotary centrifugal force is given to the multipolar magnetic rotor, it can not be swung in the radial direction. Accordingly, an interval of the multipolar magnetic rotor and the magnetic sensor in the radial direction, which are opposed to each other, can be maintained constant irrespective of an intensity of the centrifugal force.

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