Patents by Inventor Leslie Lowther

Leslie Lowther 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).

  • Brush wear indicating means with engageable electrical contacts
    Patent number: 4172988
    Abstract: A brush which presses against the commutator of a machine has secured thereto a resilient spring contact element, and as the brush wears, movement thereof causes physical engagement of the resilient spring contact element with another contact element to complete a current path. The latter contact element is secured to a yoke which surrounds the commutator.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: October 30, 1979
    Assignee: Towmotor Corporation
    Inventor: Leslie Lowther
  • Control apparatus
    Patent number: 4125885
    Abstract: Control apparatus is provided for a contactor which has a coil and at least one pair of contacts movable from an open position to a closed position in response to energizing the coil. The control apparatus includes apparatus for temporarily and permanently energizing the coil and switching apparatus for controllably energizing the coil.
    Type: Grant
    Filed: September 21, 1977
    Date of Patent: November 14, 1978
    Assignee: Towmotor Corporation
    Inventors: Leslie Lowther, Tadeusz J. Pawlak