Patents by Inventor Philip J. Campbell

Philip J. Campbell 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).

  • Slide plate adjustment mechanism
    Patent number: 4938441
    Abstract: An adjustable keyboard support is disclosed constituted by a rear housing that pivotally supports one end of a parallel link mechanism. A front housing is carried by the other end of the parallel link mechanism, and pivotally supports a keyboard mounting plate. The parallel link mechanism permits upward and downward movement of the keyboard mounting plate without change in the tilt of that plate. A gas cylinder mechanism coupled to the front housing changes the vertical position of the same, and a slide plate adjustment mechanism provides forward and backward movement of the keyboard mounting plate.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: July 3, 1990
    Assignee: Knoll International, Inc.
    Inventors: Bruce R. Hannah, James B. Eldon, Eric J. Armstrong, Harold A. Smith, Philip J. Campbell
  • Adjustable keyboard support
    Patent number: 4826123
    Abstract: An adjustable keyboard support is disclosed constituted by a rear housing that pivotally supports one end of a parallel link mechanism. A front housing is carried by the other end of the parallel link mechanism, and pivotally supports a keyboard mounting plate. The parallel link mechanism permits upward and downward movement of the keyboard mounting plate without change in the tilt of that plate. A gas cylinder mechanism coupled to the front housing changes the vertical position of the same, and a slide plate adjustment mechanism provides forward and backward movement of the keyboard mounting plate.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: May 2, 1989
    Assignee: Knoll International, Inc.
    Inventors: Bruce R. Hannah, James B. Eldon, Eric J. Armstrong, Harold A. Smith, Philip J. Campbell