Patents by Inventor John Stuart Gregg

John Stuart Gregg 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: 7976038
    Abstract: A duplex trailing arm chassis support system has two longitudinal trailing arm members disposed on respective sides of the vehicle chassis and a structurally connecting cross member joining the two trailing arms to couple the movement of the two respective arms. Resilient cushioning members extend between each of the trailing arms and the underside of the vehicle chassis or between the connecting member and the vehicle chassis to provide resilient support to the vehicle chassis. Each trailing arm carries a wheel axle having wheels on both ends of the axle, each of the wheel axles being pivotally mounted to its respective trailing arm for rotational movement about the longitudinal axis of the trailing arm, allowing the axles to rock from side to side.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: July 12, 2011
    Assignee: Peerless Limited
    Inventor: John Stuart Gregg
  • Publication number: 20090302567
    Abstract: A duplex trailing arm chassis support system has two longitudinal trailing arm members disposed on respective sides of the vehicle chassis and a structurally connecting cross member joining the two trailing arms to couple the movement of the two respective arms. Resilient cushioning members extend between each of the trailing arms and the underside of the vehicle chassis or between the connecting member and the vehicle chassis to provide resilient support to the vehicle chassis. Each trailing arm carries a wheel axle having wheels on both ends of the axle, each of the wheel axles being pivotally mounted to its respective trailing arm for rotational movement about the longitudinal axis of the trailing arm, allowing the axles to rock from side to side.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 10, 2009
    Inventor: JOHN STUART GREGG
  • Patent number: 7077410
    Abstract: A suspension system connects a wheel axle to a vehicle frame and includes a trailing arm connected at one end to the wheel axle. A pair of extension members are connected to the other end of the trailing arm and extend laterally in opposite directions along a pivot axis perpendicular to the longitudinal axis of the arm. A pair of supports extend along the pivot axis and are connected to the frame and rotatably connected to the extension member to permit pivotal movement of the trailing arm with respect to the frame about the pivot axis. The supports and extension members are dimensioned to provide a gap between the supports and extension members. A pair of resiliently deformable bearing members are interposed between the extension members and the supports in the gap. The gap and the bearing members are of sufficient width to permit limited rotational movement of the axle with respect to the frame about a vertical axis.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: July 18, 2006
    Assignee: Peerless Limited
    Inventors: John Stuart Gregg, Ian Edward Trip
  • Publication number: 20030020251
    Abstract: A suspension system connects a wheel axle to a vehicle frame and includes a trailing arm connected at one end to the wheel axle. A pair of extension members are connected to the other end of the trailing arm and extend laterally in opposite directions along a pivot axis perpendicular to the longitudinal axis of the arm. A pair of supports extend along the pivot axis and are connected to the frame and rotatably connected to the extension member to permit pivotal movement of the trailing arm with respect to the frame about the pivot axis. The supports and extension members are dimensioned to provide a gap between the supports and extension members. A pair of resiliently deformable bearing members are interposed between the extension members and the supports in the gap. The gap and the bearing members are of sufficient width to permit limited rotational movement of the axle with respect to the frame about a vertical axis.
    Type: Application
    Filed: September 11, 2002
    Publication date: January 30, 2003
    Inventors: John Stuart Gregg, Ian Edward Trip