Rotation detection device with magnet magnetized after...

Details Rotation detection device with magnet magnetized after... Rotation detection device with magnet magnetized after...

2006-05-23

2006-05-23

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207220

Reexamination Certificate

active

07049807

ABSTRACT:
A rotation detecting apparatus including a drive gear rotatably supported by a case and capable of rotating cooperatively with an object to be detected, driven gears and rotatably supported by the case and brought in mesh with the drive gear, magnets provided at rotational center portions of the driven gears and having plane portions formed with N poles and S poles, a circuit board arranged at the case and capable of being connected to outside, magnetic reluctance elements attached to the circuit board and opposed to the plane portions of the magnets and an electronic circuit part for convertion output signals of the magnetic reluctance element into rotational angle signals, wherein the magnets of the driven gears are formed with the N poles and the S poles by magnetizing the magnets after having been subjected to insert molding by a resin.

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patent: 2000-283705 (2000-10-01), None
patent: WO 00 34746 (2000-06-01), None
European Search Report Sep. 8, 2003.

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