×

Chair

  • US 7,004,543 B2
  • Filed: 08/24/2004
  • Issued: 02/28/2006
  • Est. Priority Date: 01/21/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A chair comprising:

  • a housing;

    a back support pivotally connected to said housing about a first horizontal axis, said back support pivotable between an upright tilt position and a rearward tilt position;

    a seat support directly pivotally connected to said back support about a third horizontal axis, and pivotally connected to said housing about a second horizontal axis, wherein said second horizontal axis is moveable toward said first horizontal axis as said back support is pivotable between said upright tilt position and said rearward tilt position;

    at least one leaf spring extending longitudinally within said housing and comprising a first end engaging said housing and a second end biasing said back support and said seat support in an upward direction; and

    a fulcrum member moveably supported by said housing and engaging said at least one leaf spring between said first and second ends.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×