Patents by Inventor Norman H. G. Palmer

Norman H. G. Palmer 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).

  • Control circuit for a contactor
    Patent number: 4176388
    Abstract: A control circuit is provided for a contactor which has a pair of contacts and an actuator coil which is energizable under the control of a switch to cause the contacts to close. The control circuit provides a temporary path for energizing the coil and a permanent path through the contacts. The control circuit delays energization of the coil for a preselected time to allow switch contact bounce to cease. The control circuit prevents a reestablishment of the temporary path for preselected time after the contacts close.
    Type: Grant
    Filed: March 30, 1978
    Date of Patent: November 27, 1979
    Assignee: Towmotor Corporation
    Inventor: Norman H. G. Palmer
  • Adjustable potentiometer in an accelerator control
    Patent number: 4123740
    Abstract: An apparatus having an accelerator element has a potentiometer including an inner portion movable relative to an outer portion thereof in response to movement of the accelerator element. Adjusting and support members are interconnected for adjusting the outer potentiometer portion relative to the inner portion.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: October 31, 1978
    Assignee: Towmotor Corporation
    Inventors: Norman H. G. Palmer, Wayne T. Wiblin
  • Motor control
    Patent number: 4102132
    Abstract: An electronic control for hydraulic operation of forks on a lift truck wherein in the motor and pump speed can be matched to the particular flow requirements of each hydraulic ram and wherein a smoothly variable speed of the motor and pump is obtained for operation of the lift ram by the degree of manipulation of the lift lever.
    Type: Grant
    Filed: July 13, 1977
    Date of Patent: July 25, 1978
    Assignee: Towmotor Corporation
    Inventor: Norman H. G. Palmer