US 2009/0256555 A1Published application

Linear inductive position sensor

AssigneeKSR Technologies Co.

InventorsRyan W. Elliott, Joong K. Lee, Lingmin Shao

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Abstract

A linear position sensor having a transmitter coil which generates electromagnetic radiation when excited by a source of electrical energy and wound in a first direction. A receiver coil is contained within the transmitter coil and the receiver coil includes both a first loop wound in a first direction and a second loop wound in the opposite direction. A coupler element linearly moves along a first direction relative to the transmitter coil which varies the inductive coupling between the transmitter coil and the receiver coil as a function of the linear position of the coupler element to thereby vary the electrical output signal from the receiver coil when excited by the transmitter coil. The first and second loops of the receiver coil are linearly aligned with each other along the first direction.

Claims10

Dependent claims

A linear inductive position sensor comprising:

a transmitter coil which generates electromagnetic radiation when excited by a source of electrical energy, said transmitter coil being wound in a first direction,
a receiver coil contained within said transmitter coil, said receiver having a first loop wound in a first direction and a second loop wound in a second direction opposite from said first direction,
a coupler element linearly movable in a first direction relative to said transmitter coil which varies the inductive coupling between said transmitter coil and said receiver coil as a function of the linear position of said coupler element to thereby vary the electrical output signal from said receiver coil when excited by said transmitter coil, and
wherein said first and second loops of said receiver coil are linearly aligned with each other along said first direction.

1 more element

Dependencies are inferred from the claim text.