Patents by Inventor Wade Petherbridge Lamson

Wade Petherbridge Lamson 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: 3950683
    Abstract: A motor control system is disclosed for use in controlling a DC motor. This system employes a high gain DC amplifier for providing command signals to a motor control circuit which, in turn, controls energization of the motor to vary the motor speed dependent upon the magnitude of a command signal. A dead band range of operation of the DC amplifier is obtained to prevent motor creeping when the motor speed signal calls for zero speed. This is achieved with a negative feedback network which is operative only over a limited range of input signals to effectively nullify the motor speed command signal.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: April 13, 1976
    Assignee: Cleveland Machine Controls, Inc.
    Inventor: Wade Petherbridge Lamson