Leaf Spring Patents (Class 297/268.1)
  • Patent number: 7845727
    Abstract: A furniture item includes a support member and a rotatably pinned mechanism operable in rocking and reclining motions. The mechanism includes first and second side plates; a first pair of forward link members each rotatably connected to one of the side plates; a pantograph linkage set connected to the first pair of forward link members to extend and retract a footrest assembly in the reclining motion; and a drive rod rotatable between the side plates. Rotating the drive rod extends or retracts the pantograph linkage set. An escutcheon connected to the drive rod has a snap-engaged handle to manually rotate the drive rod. At least one U-shaped spring connected between the support member and the mechanism allows rocking motion. A seat pan has flat body springs extending over a seat pan aperture to support an occupant. A detent at one end of each flat spring engages the seat pan.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: December 7, 2010
    Assignee: La-Z-Boy Incorporated
    Inventor: Larry P. LaPointe
  • Patent number: 6729688
    Abstract: The invention relates to seat and backrest arrangements in seat furniture, in particular office chairs, which comprise a seat plate, a seat-plate support and a backrest support and in which the seat plate (1), in the region of its front, knee-side edge (2), is connected moveably to the seat-plate support (3) and, in the region of its rear edge (5), is connected moveably to the backrest support (6), the backrest support (6) being coupled displaceably to the seat-plate support (3). The seat and backrest arrangements according to the invention are characterized in that a spring means (4) for cushioning the seat plate (1) and the backrest support (6) is arranged in the region of the front, knee-side edge (2) of the seat plate (1)—between the seat plate (1) and seat-plate support (3).
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: May 4, 2004
    Assignee: Giroflex-Entwicklungs-AG
    Inventor: Anton Erne
  • Patent number: 6209843
    Abstract: A pivotal rocking chair base is provided which allows the ultimate chair user to select or eliminate the rotational movement of the chair base. Also, by making adjustments to front and rear turnbuckles the amount or degree of tilt or rocking action of the seat can be chosen. An infinite variety of adjustments is thus available to the user to customize the chair motion for his particular purposes and comfort.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: April 3, 2001
    Inventor: R. Brantley Smith, Jr.