A first aspect of the present disclosure provides a chair. This chair is provided with a seat portion in which a deformation mode of at least a portion of a seating surface of the seat portion is isolated in such that a target curved surface including a double-curved surface of a prescribed type, relative to a prescribed position, is formed irrespective of the position of the buttocks of a user when the user is seated.

A chair for particular use in clinical or hospital environments has a frame to which a support material is secured. The support material may form a chair back and/or a seat for the chair to provide support to the chair occupant. The support material may be made from a textile of interwoven strands wherein some of the interwoven strands include copper containing particles, such as copper iodide or copper oxide within the textile fibers.

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.

The invention relates generally to a lightweight, collapsible, and portable wheeled seat, e.g., a wheeled office chair or stool, for travel, storage, and mobility. The seat includes a seat base member and a seat surface member collapsible between an open, extended position, which is configured to provide a seating surface, and a collapsed, closed position. The seat surface member includes a central seating surface member fixed to the seat base member that has an outer perimeter, and a pair of oppositely disposed and generally u-shaped seating surface members pivotally secured to the seat base member. Each of the generally u-shaped seating surface members include a pair of leg portions that extend from a base portion thereof, or an inward directed perimeter and a portion of each inward directed perimeter has a shape that substantially complementarily corresponds to a shape of a portion of the outer perimeter of the central seating surface member.

An ergonomic chair (300) comprising a seat (310), a lower leg support (320), a chest support (330), and a hip support (360); the seat (310) for supporting the posterior thigh (11) and/or buttocks (12) of a seated user (10), the seat (310) being configured to urge the hip of a seated user (10) in a forward direction; the lower leg support (320) for supporting the anterior side of the lower legs (14) of the seated user (10); the chest support (330) for supporting the chest (15) of the seated user (10) in a forward leaning position of the seated user (10); the hip support (360) is configured to support the anterior hip of a seated user (10) as the seat (310) urges the seated user's (10) hip forwardly towards the hip support (360).

According to the present invention, we present a system employed in the manufacture of furniture requiring plastic fabric rotary assembly meshes comprising a plurality of parts that can be used repeatedly, as all of them are made up of first male locking elements and second female locking elements that do not require extraneous fastening elements for their placement.

A folding chair includes front and rear supports that fold and/or retract into central beams to reduce the space occupied by the chair in a folded configuration. A backrest is coupled to the central beams with a hub that allows an angle of the backrest relative to the central beams to be selected and for the backrest to be folded flat relative to the central beams. One or more actuators and pin actuators may control the relative movements of the backrest, front support, rear support, and central beams.

Rigidity is improved at a part where side frame pieces overlap each other in a side frame. In a vehicle seat provided with a seat back frame, a side frame of the seat back frame has a first side frame piece and a second side frame piece partially overlapping each other in a direction of extension of the side frame. The side frame has an overlapping part where both the first side frame piece and the second side frame piece overlap each other. At the overlapping part, the side frame pieces overlap each other in a state where a plurality of closed regions and closed by being surrounded by both side frame pieces are formed in a cross section of the overlapping part intersecting with the direction of extension of the side frame.

A seating device (1) with a reclining function comprising a back frame (4) which provides a significant reduction in the complexity of the system, at the same time as it gives the user increased comfort both in an upright (sitting) position and in a reclining position. The back frame (4) comprises in particular two types of resilient elements (7, 8) and rotatable fasteners (6) which provide adaptive support to the lumbar spine in both a sitting and reclining position.