Patents by Inventor Stephen Husher

Stephen Husher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Linear displacement transducers utilizing voltage component in phase with current that varies linearly with core displacement
    Patent number: 4954776
    Abstract: A linear displacement transducer comprises a winding, a magnetic core which is linearly displaceable relatively to the winding, and a source for energizing the winding with a constant RMS alternating current at a frequency sufficiently high for the resistive losses in the magnetic core to cause the voltage across the winding to vary substantially linearly relative to the linear displacement of the magnetic core. The frequency may, for example, be in the range 10 to 20 kHz, and a temperature sensing winding may be associated with the winding to enable the output from the transducer to be compensated for temperature changes, or the winding may be used in time-division multiplex for this purpose.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: September 4, 1990
    Assignee: Penny & Giles Controls Limited
    Inventor: Stephen Husher