Patents by Inventor Leroy E. Weaver

Leroy E. Weaver 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).

  • Patent number: 3969662
    Abstract: A system for measuring the rotation of a shaft without direct mechanical connection to it uses a digital system to maintain a second shaft that connects to a cylindrical chart recorder in a constant angular position relationship with the measured shaft. Two limit switches on the recorder shaft sense the rotation of a reference point on the measured shaft beyond a range defined by the location of the limit switches. A stepper motor driven by digital power supply incrementally rotates the recorder shaft to move a reference point on the recorder shaft back into alignment with the reference point on the measured shaft. A digital counter controls the number of pulses supplied by the power supply to stop the recorder shaft in the aligned position.
    Type: Grant
    Filed: November 8, 1973
    Date of Patent: July 13, 1976
    Assignee: Sperry-Sun, Inc.
    Inventor: Leroy E. Weaver