Magnetic rotational position sensor

Details Magnetic rotational position sensor Magnetic rotational position sensor

Filed on

2005-10-18

Date issued

2005-10-18

Examiner

Ledynh, Bot (Department: 2862)

Patent Class

Electricity: measuring and testing

SubClass

Magnetic

SubSubClass

Displacement

Other Related Categories

C324S207220

Type

Reexamination Certificate

Status

active

Patent number

06956368

Description

ABSTRACT:
A magnetic rotational position sensor comprising a magnetic circuit including a loop pole piece and a magnet, and a magnetic flux sensor adapted to sense varying magnitudes of magnetic flux density associated with the magnetic circuit. The loop pole piece has a peripheral outer wall defining an inner air gap, with the outer wall including an inwardly projecting portion extending into the air gap. The magnet is positioned within the air gap generally opposite the inwardly projecting portion of the loop pole piece. The magnet and the loop pole piece cooperate to generate a magnetic field within the air gap. The magnetic circuit is rotatable about a rotational axis to correspondingly rotate the magnetic field about the rotational axis. The magnetic flux sensor is disposed within the magnetic field to sense a different magnitude of magnetic flux density in response to rotation of the magnetic field about the rotational axis.

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