Position detector

Details Position detector Position detector

2008-07-30

2011-10-25

Hollington, Jermele M (Department: 2858)

Electricity: measuring and testing

Magnetic

Displacement

C324S207230, C324S207250, C324S220000

Reexamination Certificate

active

08044658

ABSTRACT:
In a position detecting apparatus, a magnetic scale part has a magnetic pattern formed by magnetization along a longitudinal direction. An increased magnetization part is arranged at an end portion of the magnetic scale part in the longitudinal direction. The increased magnetization part is magnetized with an increased intensity of magnetization as compared to the magnetic scale part. A magnetic field shaping part is disposed adjacent to the magnetic scale part for shaping a magnetic field generated from the magnetic scale part. A magnetic detection part detects both the magnetic field from the magnetic pattern of the magnetic scale part and the magnetic field from the increased magnetization part. The magnetic detection part is arranged in opposed relation to the magnetic scale part movably in the longitudinal direction of the magnetic scale part. The magnetic pattern and the increased magnetization part are arranged along a track through which the magnetic detection part moves.

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