A chair assembly includes a four-bar arrangement that includes a lower end and an upper end where the upper end is adjustable between a raised position and a lowered position, and an arm rest assembly adapted to support the arm of a seated user thereon and supported on an upper end of the four-bar arrangement, wherein the lower end of the four-bar arrangement is pivotably supported from an arm support structure for pivotable movement about an arm pivot axis, such that the upper end of the four-bar arrangement is movable between a first position and second position located laterally outward from the first position, and wherein the arm pivot axis is angularly offset from a vertical axis.

A seating structure includes a frame, a carrier, and a suspension material. The frame includes first and second side frame members and first and second cross frame members forming a closed loop and defining an opening therebetween. The frame also includes a plurality of first attachment features on an outer perimeter of the frame. The carrier includes first and second side carrier members and first and second cross carrier members that form a closed loop. The carrier also includes a plurality of second attachment features on an inner perimeter of the carrier. The plurality of second attachment features engages the plurality of first attachment features to attach the carrier to the frame. The suspension material is attached to the carrier and extends over the opening in the frame to define a continuous seat and backrest.

A seating structure includes a frame, a carrier, and a suspension material. The frame includes first and second side frame members and first and second cross frame members forming a closed loop and defining an opening therebetween. The frame also includes a plurality of first attachment features on an outer perimeter of the frame. The carrier includes first and second side carrier members and first and second cross carrier members that form a closed loop. The carrier also includes a plurality of second attachment features on an inner perimeter of the carrier. The plurality of second attachment features engages the plurality of first attachment features to attach the carrier to the frame. The suspension material is attached to the carrier and extends over the opening in the frame to define a continuous seat and backrest.

A chair assembly includes an arm assembly that includes an armrest supported by a vertically adjustable support assembly and an arm base, where the arm base extends at an acute angle with respect to a longitudinal centerline of the chair assembly, an upholstery arrangement including a ring member attached to a cover, where the ring member includes a plurality of reliefs having a width that reduces as the ring member is wrapped about a shell member of the chair assembly, and a control arrangement having a biasing member that moves through an arcuate path as the biasing member is adjusted between varying bias settings.

A chair assembly includes an arm assembly that includes an armrest supported by a vertically adjustable support assembly and an arm base, where the arm base extends at an acute angle with respect to a longitudinal centerline of the chair assembly, an upholstery arrangement including a ring member attached to a cover, where the ring member includes a plurality of reliefs having a width that reduces as the ring member is wrapped about a shell member of the chair assembly, and a control arrangement having a biasing member that moves through an arcuate path as the biasing member is adjusted between varying bias settings.

A gas cylinder quick release device has an upper bearing plate, and a lower annular collar arranged below the upper bearing plate on an axis common to the upper bearing plate and the lower annular collar. A handle is mounted to move between a first position and a second position. Movement of the handle from the first position to the second position imparts axial displacement of the upper bearing plate and the lower annular collar away from each other along the axis. The lower annular collar moves downward along the axis when the lower annular collar is axially displaced away from the upper bearing plate.

A gas cylinder quick release device has an upper bearing plate, and a lower annular collar arranged below the upper bearing plate on an axis common to the upper bearing plate and the lower annular collar. A handle is mounted to move between a first position and a second position. Movement of the handle from the first position to the second position imparts axial displacement of the upper bearing plate and the lower annular collar away from each other along the axis. The lower annular collar moves downward along the axis when the lower annular collar is axially displaced away from the upper bearing plate.

A seating furniture includes a seat with a seat surface, a pedestal and a tilt mechanism. The tilt mechanism is disposed between the pedestal and the seat and permits an inclination of the seat surface of the seat relative to the horizontal. In addition, the tilt mechanism has a lower bearing block mounted to the pedestal, and an upper bearing block fixedly connected to the seat. The lower bearing block has a convexly curved lower bearing surface on its upper side facing the upper bearing block, and the upper bearing block has a concavely curved upper bearing surface on its lower side facing the lower bearing block. The lower and upper bearing surfaces have substantially corresponding radii of curvature, so that the upper bearing block can be moved relative to the lower bearing block along the upper bearing surface. A tilt mechanism for seating furniture is also provided.

A seating furniture includes a seat with a seat surface, a pedestal and a tilt mechanism. The tilt mechanism is disposed between the pedestal and the seat and permits an inclination of the seat surface of the seat relative to the horizontal. In addition, the tilt mechanism has a lower bearing block mounted to the pedestal, and an upper bearing block fixedly connected to the seat. The lower bearing block has a convexly curved lower bearing surface on its upper side facing the upper bearing block, and the upper bearing block has a concavely curved upper bearing surface on its lower side facing the lower bearing block. The lower and upper bearing surfaces have substantially corresponding radii of curvature, so that the upper bearing block can be moved relative to the lower bearing block along the upper bearing surface. A tilt mechanism for seating furniture is also provided.

A chair component assembly includes a support component adapted to support a portion of a seated user, and a cover including a plurality of sides that cooperate to form an interior space that receives the support component therein, the cover further including a support component receiving aperture and a flap movable between an open position where the support component may be moved from an exterior of the cover to the interior space of the cover, and a closed position where the flap covers the support component receiving aperture, and wherein the flap is secured to the support component by a quick-connect fastener.