Lucas Industries Limited

Colin S Bill

Charles Peter Cockshott

John H Francis

A linear displacement transducer includes a first elongated magnetizable member having first and second pole pieces which extend parallel with each other over the full length of said first member and which are of substantially constant width along their length. A first winding is wound around part but not all of said first member, a second winding is wound around the full length of the first member. A second elongated member having at least a part which is shorter than said first elongate member is movable linearly relative to the first member in a direction parallel with the longitudinal axis of the first member, such that a substantially constant gap is maintained between the members, to vary the magnetic coupling between the first and second windings when an a.c. signal is applied, in use, to one of the windings.

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Birmingham, United Kingdom

Colin S Bill