Tk Canada Limited

Hni Corporation

Nhi Corporation

Wolfgang Deisig

Nils Koehn

John Robert Koch

Corey John Susie

Phillip David Minino

Jay Richard Machael

Douglas A Schroeder

Vladimir Yevko

Eugene Eliseev

A chair includes a support spine. A seat assembly is coupled to the support spine, and the seat assembly includes a flexible frame being movable relative to the support spine. The flexible frame comprises a first frame element, a second frame element coupled to the first frame element at a first corner, and a third frame element coupled to the second frame element at a second corner. The first corner and the second corner are substantially independently movable relative to the support spine. A conformable panel is coupled to the flexible frame and configured to engage an occupant of the chair. A resistance assembly couples the support spine to the flexible frame. The resistance assembly bears against the flexible frame to facilitate substantially independent movement of the first corner and the second corner relative to the support spine.

Chairs including flexible frames

A chair system according to embodiments of the present invention includes a base comprising a seat for a user and one or more support legs, a back, and a flexible back support element rigidly coupled to the back and to the base, the flexible back support element comprising a flex zone, the flex zone comprising one or more notches, wherein the back is reclinable from an upright position to a reclined position, wherein the one or more notches are configured to narrow as the back reclines from the upright position to the reclined position, and wherein the one or more notches are open in the upright position and closed in the reclined position.

Flexible back support member with integrated recline stop notches

Chair

A 'task' chair intended primarily for a person working at a computer terminal has a back provided with a pair of upright struts that incorporate respective parallelogram linkages operative to increase the curvature of the lumbar region of the seat back while at least substantially maintaining the contour of the upper region of the backrest when a person leans back in the chair.

Ergonomic chair backrest

An adjustable work chair such as an office chair has a height-adjustable seat comprising a front seat part ( ) and a rear seat part ( ) connected by a hinge ( ) that extends transversely of the seat. A first arm ( ) is coupled between the front part of the seat and the head of a fixed part ( ) of a seat lift ( ), and a second arm ( ) is coupled between an extendable piston of the lift ( ) and the underside of the rear part ( ) of the seat.

Adjustable chair

Chair base

Growing community of inventors

Berlin, Germany

Wolfgang Deisig