Synchrotilt chair with adjustable seat, back and energy mechanism

A chair (20) is provided having a base assembly (21) including a base frame, a back frame (30) pivoted to the base frame for movement between upright and reclined positions, and a seat (24) slidably supported on the base frame and pivoted to the back frame so that the seat moves forwardly and its re...

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Bibliographische Detailangaben
Hauptverfasser:	KLAASEN, GARDNER J. II, KNOBLOCK, GLENN A, YANCHARAS, MICHAEL J, PETERSON, GORDON J, DAMMERMANN, ARNOLD B, JOHNSON, MICHELLE R, PERKINS, JAMES A, TEPPO, DAVID S, ROOSSIEN, CHARLES P, SCHEPER, ROBERT M, PUNCHIES, EDWARD H, HEIDMANN, KURT R, EKDAHL, KEVIN A, DEKRAKER, LARRY, BATTEY, ROBERT J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEDS CHAIRS COFFEE MILLS DOMESTIC ARTICLES OR APPLIANCES FURNITURE HUMAN NECESSITIES SOFAS SPICE MILLS SUCTION CLEANERS IN GENERAL
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Beschreibung
Zusammenfassung:	A chair (20) is provided having a base assembly (21) including a base frame, a back frame (30) pivoted to the base frame for movement between upright and reclined positions, and a seat (24) slidably supported on the base frame and pivoted to the back frame so that the seat moves forwardly and its rear moves forwardly and downwardly with the back frame upon recline. A flexible back is connected to the back frame at top and bottom locations and is provided with lumbar adjustment for improved lumbar force/support and shape. A seat is provided with seat depth adjustment and with active and passive thigh flex support. A novel energy mechanism (27) is provided that includes a transverse spring (28), a lever (54) and a movement arm shift adjuster (29) for adjusting the spring tension on the back frame. The moment arm shift adjuster is readily adjustable and includes an overtorque device to prevent damage to components of the energy mechanism.