Patents by Inventor Harold A. Smith

Harold A. Smith 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).

  • Low profile wheelchair
    Patent number: 5263728
    Abstract: A low profile wheelchair includes first and second frame portions that may be selectively spaced apart in an operative position and brought together in a stored position. Armrests, seat back, and footrests are each pivotally mounted to the frame portions so as to minimize the height and length of the wheelchair in a storage position.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: November 23, 1993
    Assignee: Invacare Corporation
    Inventors: Nathalal G. Patel, Allen W. Diedrick, Thomas J. Ruckowski, Harold A. Smith, Richard J. Krupar, Tonya E. Jones
  • 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
  • Back support tilt and seat and back support height control mechanism for a chair or the like
    Patent number: 4561693
    Abstract: Tilt control for a back support and height control for the back support and a seat for a chair or the like are provided by a gas cylinder actuator having a cam surface and pivotally mounted so that the cam surface activates the gas cylinder. A blocker plate is pivotally mounted for movement between one position in which it prevents tilting of the back support and another position in which tilting is permitted. The actuator and blocker plate are coupled together so that pivotal movement of one is accompanied by pivotal movement of the other.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: December 31, 1985
    Assignee: Knoll International, Inc.
    Inventors: Alan Brownlie, Jeffrey D. Crawford, Harold A. Smith
  • Towel rack
    Patent number: D281845
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: December 24, 1985
    Assignee: Knoll International, Inc.
    Inventor: Harold A. Smith