Patents by Inventor Henry J. Harper

Henry J. Harper 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).

  • Interlock for multi-drawer cabinet
    Patent number: 4865404
    Abstract: A multi-drawer file cabinet having an interlock mechanism to prevent opening of more than one drawer at a time. The interlock mechanism includes modular lock bars for accommodating half-height and full-height drawers in any desired combination. A security lock mechanism is actuatable without requiring shifting of the lock bars. Doors may be provided for the cabinet spaces and anti-rebound mechanisms are provided for the drawers and/or doors.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: September 12, 1989
    Assignee: Harpers
    Inventor: Henry J. Harper
  • Adjustable seat-back mechanism
    Patent number: 4012158
    Abstract: An adjustable seat-back mechanism for use with a secretarial chair or the like to allow vertical adjustment of the chair's seat back from among a series of discrete vertical locations. The mechanism includes a bracket attached to the seat back, a pivotal lever attached to the bracket and a mounting bar with edge notches that are engageable by the lever to define the discreet vertical locations. The lever is easily operated to allow quick and effortless movement of the seat-back.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: March 15, 1977
    Inventor: Henry J. Harper