×

Chair mechanism providing for an inclination range and inclination stop means

  • US 5,417,473 A
  • Filed: 09/30/1993
  • Issued: 05/23/1995
  • Est. Priority Date: 10/08/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A work chair mechanism providing for a swivelling range with stepless transition from a forwardly inclined position to a rearwardly inclined position based on the sitting posture and distribution of a user'"'"'s body, said mechanism comprising:

  • a seat carrier (7) pivoted at a front portion about a front pivot axis (13) and a rear portion about a rear pivot axis (11);

    a back rest carrier (8) in connection with the seat carrier about said rear pivot axis; and

    a plurality of driver plates (15) forming a recess (16) in which a stop is provided for limiting the swivelling range of the chair, the driver plates connecting said front pivot axis to a main pivot axis (12), the main pivot axis comprising a longitudinal axis of a torsional spring (9), wherein;

    the seat carrier, drive plates, torsion spring and back rest carrier are mounted as a system on a resilient seat support (4) and pivotable about a negative inclination pivot axis (10) of the resilient seat support, the negative inclination axis being in line with an upright tube (2) of the chair.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×