Patents by Inventor Lee Stephen Boyum

Lee Stephen Boyum 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: 6641235
    Abstract: A track tensioning system for a tracked vehicle having both a frame with left and right side members as well as left and right tracks that are both configured to translate along the ground to move the vehicle includes left and right wheel plates located substantially adjacent to a respective side member. Left and right wheels are coupled to the respective left and right wheel plates. The left and right wheels are coupled to the left and right tracks and rotate on a rotational axis so that, as the tracks translate along the ground, both wheels rotate with the tracks. For providing track tensioning to the tracks, each wheel plate pivots against the respective side member of the frame on a pivot axis that is displaced form the rotational axis. The left and right wheel plates may pivot in substantially parallel pivot planes. The substantially parallel pivot planes may be vertical. The left wheel plate may pivot around a left pivot axis and the right pivot plate may pivot around a right pivot axis.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: November 4, 2003
    Assignee: Jarraff Industries Inc.
    Inventor: Lee Stephen Boyum
  • Patent number: 6604796
    Abstract: A track tensioning system for a tracked vehicle having left and right tracks includes a biasing system for simultaneously providing track tensioning to both tracks by biasing each track through a track-tensioning arc. The biasing system may include a linear force-generating system for generating a track-tensioning force. The linear force-generating system may for example be a spring or a piston and cylinder assembly. The biasing system may also include a pivoting rocker arm assembly for transmitting the track-tensioning force from the linear force-generating system to the tracks.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: August 12, 2003
    Assignee: Jarraff Industries Inc.
    Inventor: Lee Stephen Boyum
  • Publication number: 20020171290
    Abstract: A track tensioning system for a tracked vehicle having both a frame with left and right side members as well as left and right tracks that are both configured to translate along the ground to move the vehicle includes left and right wheel plates located substantially adjacent to a respective side member. Left and right wheels are coupled to the respective left and right wheel plates. The left and right wheels are coupled to the left and right tracks and rotate on a rotational axis so that, as the tracks translate along the ground, both wheels rotate with the tracks. For providing track tensioning to the tracks, each wheel plate pivots against the respective side member of the frame on a pivot axis that is displaced form the rotational axis. The left and right wheel plates may pivot in substantially parallel pivot planes. The substantially parallel pivot planes may be vertical. The left wheel plate may pivot around a left pivot axis and the right pivot plate may pivot around a right pivot axis.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 21, 2002
    Inventor: Lee Stephen Boyum
  • Publication number: 20020171289
    Abstract: A track tensioning system for a tracked vehicle having left and right tracks includes a biasing system for simultaneously providing track tensioning to both tracks by biasing each track through a track-tensioning arc. The biasing system may include a linear force-generating system for generating a track-tensioning force. The linear force-generating system may for example be a spring or a piston and cylinder assembly. The biasing system may also include a pivoting rocker arm assembly for transmitting the track-tensioning force from the linear force-generating system to the tracks.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 21, 2002
    Inventor: Lee Stephen Boyum