Position sensor utilizing a linear hall-effect sensor

Details Position sensor utilizing a linear hall-effect sensor Position sensor utilizing a linear hall-effect sensor

2007-07-31

2007-07-31

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207200

Reexamination Certificate

active

11656173

ABSTRACT:
Disclosed are a magnetic field assembly and method of configuring the same for use in position sensors of the type, which include a magnetic field sensor. First and second magnets in the field assembly are positioned on a surface of a magnetic plate (return path) and separated from one another by a separation distance. The first magnet has a magnetic axis substantially transverse to the surface of the magnetic plate, and the first magnet has a polarity opposite a polarity of the second magnet. The thicknesses of the first and second magnets are selectively varied along a stroke direction, and the separation distance is selected along with a gap length distance between the magnetic sensor and the field assembly, so that a predetermined flux density versus stroke characteristic can be provided for the position sensor.

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International Search Report mailed Nov. 16, 2004.

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