Patents by Inventor Robert Marjoram

Robert Marjoram 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).

  • Controllable vehicle suspension system with a controllable magnetorheological fluid strut
    Patent number: 8602182
    Abstract: The controllable suspension system includes a strut with a magnetorheological fluid damper. The magnetorheological fluid damper includes a longitudinal damper tubular housing having a longitudinally extending axis and an inner wall for containing magnetorheological fluid. The damper includes a piston head movable within the damper tubular housing along a longitudinal length the housing, with the damper piston head providing a first upper variable volume magnetorheological fluid chamber and a second lower variable volume magnetorheological fluid chamber, with a fluid flow gap between the upper and lower fluid chambers, the damper piston having a longitudinal piston rod for supporting the piston head within the housing, with the piston supported within the housing with a piston rod bearing assembly disposed between the housing and the rod, with the piston rod bearing assembly having a piston rod bearing seal interface.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: December 10, 2013
    Assignee: Lord Corporation
    Inventors: Kenneth Alan St. Clair, William J. McMahon, Robert Marjoram, Mark R. Jolly, J. David Carlson, K. Andrew Kintz
  • CONTROLLABLE VEHICLE SUSPENSION SYSTEM WITH A CONTROLLABLE MAGNETORHEOLOGICAL FLUID STRUT
    Publication number: 20110056780
    Abstract: The controllable suspension system includes a strut with a magnetorheological fluid damper. The magnetorheological fluid damper includes a longitudinal damper tubular housing having a longitudinally extending axis and an inner wall for containing magnetorheological fluid. The damper includes a piston head movable within the damper tubular housing along a longitudinal length the housing, with the damper piston head providing a first upper variable volume magnetorheological fluid chamber and a second lower variable volume magnetorheological fluid chamber, with a fluid flow gap between the upper and lower fluid chambers, the damper piston having a longitudinal piston rod for supporting the piston head within the housing, with the piston supported within the housing with a piston rod bearing assembly disposed between the housing and the rod, with the piston rod bearing assembly having a piston rod bearing seal interface.
    Type: Application
    Filed: November 15, 2010
    Publication date: March 10, 2011
    Inventors: KENNETH ALAN ST.CLAIR, William J. McMahon, Robert Marjoram, Mark R. Jolly, J. David Carlson, K. Andrew Kintz
  • Controllable vehicle suspension system with a controllable magnetorheological fluid strut
    Patent number: 7849983
    Abstract: The controllable suspension system includes a strut with a magnetorheological fluid damper. The magnetorheological fluid damper includes a longitudinal damper tubular housing having a longitudinally extending axis and an inner wall for containing magnetorheological fluid.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: December 14, 2010
    Assignee: Lord Corporation
    Inventors: Kenneth Alan St. Clair, William J. McMahon, Robert Marjoram, Mark R. Jolly, J. David Carlson, K. Andrew Kintz
  • CONTROLLABLE VEHICLE SUSPENSION SYSTEM WITH A CONTROLLABLE MAGNETORHEOLOGICAL FLUID STRUT
    Publication number: 20070257408
    Abstract: The controllable suspension system includes a strut with a magnetorheological fluid damper. The magnetorheological fluid damper includes a longitudinal damper tubular housing having a longitudinally extending axis and an inner wall for containing magnetorheological fluid.
    Type: Application
    Filed: May 1, 2007
    Publication date: November 8, 2007
    Inventors: Kenneth St.Clair, William McMahon, Robert Marjoram
  • BRAKE WITH FIELD RESPONSIVE MATERIAL
    Publication number: 20070181391
    Abstract: A controllable brake includes a housing and a rotor supported on a shaft. The rotor is housed within a chamber containing a field controllable material which is acted upon by a magnetic field generator to impede movement of the rotor. The shaft is supported by bearings. The controllable brake housing defines a second housing chamber adapted to enclose means for monitoring and/or controlling the brake and in this way, an integrated, compact controllable brake is provided.
    Type: Application
    Filed: December 22, 2006
    Publication date: August 9, 2007
    Inventors: Kenneth St. Clair, Robert Marjoram, William Hardin, Mariane Hontz, Stephen Koester
  • Brake with field responsive material
    Publication number: 20050126871
    Abstract: A controllable brake includes a rotor supported on one shaft end. The rotor is housed within a chamber containing a field controllable material which is acted upon by a magnetic field generator to change the rheology of the material and thereby impede movement of the rotor. The shaft is supported by two bearings which, in combination with the housing define a second housing chamber adapted to enclose means for monitoring and/or controlling the brake and in this way, an integrated, compact controllable brake is provided.
    Type: Application
    Filed: January 25, 2005
    Publication date: June 16, 2005
    Inventors: Mark Jolly, Robert Marjoram, Steve Koester, Kenneth St.Clair