Electricity: measuring and testing – Magnetic – Permanent magnet testing
Reexamination Certificate
2007-08-21
2007-08-21
LeDynh, Bot (Department: 2862)
Electricity: measuring and testing
Magnetic
Permanent magnet testing
C073S514310, C073S514160
Reexamination Certificate
active
11516839
ABSTRACT:
Position sensing of movable elements including but not limited to machine components is disclosed. Motion of a movable element can produce motion of a magnetic field, which can be detected by magnetic sensors. The motion and/or variations of a magnetic field and/or a magnetic flux may be produced by any combination of a motion of the sensors, associated magnets, or associated magnetic material. Magnetic sensors maybe capable of measuring either rotary, or linear motion, or both. Such sensors can provide indication of an incremental position change, an absolute position, or both. Absolute position and high-resolution position sensing may be produced for measurement of either linear and/or angular motion. Suitable magnetic sensors include, but are not limited to, Hall effect devices and/or magneto-resistive elements, and may include multi-element magnetic sensors. Suitable signal conditioning and/or control means such as control electronics can be used to receive output signals from the sensors.
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International Search Report for PCT/US2006/006877 mailed Jun. 22, 2006.
Mock M. Robert
Sweer Grant
BainwoodHuang
HR Textron, Inc
LeDynh Bot
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