Patents by Inventor John W. Ooms

John W. Ooms 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: 6286441
    Abstract: A motorized height adjustable table having a support base, a top assembly including a substantially horizontally disposed work surface, and first and second powered drive assemblies for raising and lowering the work surface. The first and second drive assemblies have first and second electric motors and drivingly engage the top assembly for effecting vertical movement of the top assembly to adjust the height of the work surface. A controller is coupled to the first and second drive assemblies for simultaneously controlling the first and second electric motors. The controller senses a relative height displacement between the first and second drive assemblies and de-energizes the motor controlling for the leading drive assembly until the relative difference in height between the first and second drive assemblies is substantially zero.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: September 11, 2001
    Assignee: Steelcase Development Corporation
    Inventors: Roger D. Burdi, Richard H. Baker, John W. Ooms