Patents by Inventor John R. Hereford

John R. Hereford 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).

  • Electrical pulse generator for remote reading meter
    Patent number: 4032805
    Abstract: Electrical pulse generator to operate a remote water meter indicator in which the pulse generator is driven by the drive of the meter to cause a magnetic circuit to be opened and closed in accordance with the rotation of the meter drive. The magnetic circuit is opened and closed in a manner whereby a linear force element, i.e., a spring, is acting against a magnetic gap so that the spring is sufficient to overcome the magnetic force and open the gap to cause a large change in the reluctance of the magnetic circuit, generating a pulse in a coil which can be then used to drive a remote reading meter.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: June 28, 1977
    Assignee: Gamon-Calmet Industries, Inc.
    Inventor: John R. Hereford