Title:
CHAIR CONSTRUCTION
Document Type and Number:
WIPO Patent Application WO2000078185
Kind Code:
A3
Abstract:
A chair (50) includes a base (51) having a control (52), and a seat and a back tilt bracket (54) pivoted to the control (52) for synchronous movement. An angularly-adjustable extension (56) is adjustably supported on the back tilt bracket (54) and is pivotally connected to a back support structure (57) and a backrest frame (58) in a four-bar linkage arrangement. The back support structure (57) includes a spine assembly (60) and armrests (64) are operably supported on the spine assembly (60) for vertical adjustment by an armrest mount (62). The armrests pivot at an angular rate between a rate of the seat and the back during recline of the back. A lumbar slide (68) slidably engages a back shell (66) for changing a vertical shape of the lumbar section, and lumbar side arms (69) engage a rear surface of the back shell (66) for changing a horizontal shape of the lumbar section (67).
Inventors:
BALL DOUGLAS C
GOLDICK LEON
DESLAURIERS ALAIN
SOKALSKI JEFF G
GOLDICK LEON
DESLAURIERS ALAIN
SOKALSKI JEFF G
Application Number:
PCT/US2000/014720
Publication Date:
June 28, 2001
Filing Date:
May 25, 2000
Export Citation:
Assignee:
STEELCASE INC (US)
International Classes:
A47C1/032; A47C7/46; (IPC1-7): A47C3/00
Foreign References:
| US5249839A | 1993-10-05 |
Other References:
See also references of EP 1191863A4
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