Patents by Inventor Alan H. Lock

Alan H. Lock 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).

  • Strain gauge simulator
    Patent number: 4357823
    Abstract: In order to facilitate the accurate calibration of a strain gauge amplifier, an electrical circuit is provided, the output of which simulates the output of a strain gauge. A given polarizing current which is the same as that normally applied to the strain gauge is applied to the electrical circuit. Additional, circuitry is provided for producing a single electrical output equivalent to that of the strain gauge.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: November 9, 1982
    Assignee: Rolls-Royce Limited
    Inventor: Alan H. Lock