Patents by Inventor Larry Appleman

Larry Appleman 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).

  • Automatic lamp bulb changer for signal lamps
    Patent number: 4402038
    Abstract: In order to provide for automatic replacement of lamp bulbs (lamps) when they fail to illuminate and to enhance the reliability of signal lamps, such as those which signal oncoming trains as they move along railway tracks, a plurality of lamps are disposed angularly spaced from each other on one side of a turntable which is rotatable under spring bias to bring the lamps successively into positions in alignment with the lens of the signal lamp. A latching mechanism having a latch member incorporated into the turntable and a detent member operated by a solenoid provides for releasable engagement of the turntable so as to enable it to move between the successive positions.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: August 30, 1983
    Assignee: General Signal Corp.
    Inventors: Russell M. Hartung, Larry Appleman, Warren R. Alexander
  • Automatic lamp bulb changer for signal lamps
    Patent number: RE31987
    Abstract: In order to provide for automatic replacement of lamp bulbs (lamps) when they fail to illuminate and to enhance the reliability of signal lamps, such as those which signal oncoming trains as they move along railway tracks, a plurality of lamps are disposed angularly spaced from each other on one side of a turntable which is rotatable under spring bias to bring the lamps successively into positions in alignment with the lens of the signal lamp. A latching mechanism having a latch member incorporated into the turntable and a detent member operated by a solenoid provides for releasable engagement of the turntable so as to enable it to move between the successive positions.
    Type: Grant
    Filed: March 22, 1984
    Date of Patent: September 17, 1985
    Assignee: General Signal Corporation
    Inventors: Russell M. Hartung, Larry Appleman, Warren R. Alexander