A structural component may have a flexible structure with at least one adjusting mechanism, which may be formed at least from a plurality of folded elements or lever elements and spacing elements that are coupled to one another in such a way that their upper surfaces are connected to one another by an upper flat element and their lower surfaces are connected to one another by a lower flat element. The upper flat element and the lower flat element may be configured to be moved in a defined manner in the event of a tilting movement of the flexible structure

A body support assembly includes a seat assembly and backrest assembly supported by a tilt control assembly. Methods of using and assembling the body support assembly are provided.

A body support assembly includes a seat assembly and backrest assembly supported by a tilt control assembly. Methods of using and assembling the body support assembly are provided.

Stackable or nestable single person seating assemblies that include a leg support defined by a plurality of legs and a crossbar that extends between the plurality of legs. The seat assembly includes a back that is rotatably coupled to the plurality of legs and a seat that is rotatably coupled to the back. A biasing element extends from the leg support to the seat and is coupled to a respective leg. Respective portions of the biasing element provide a third pivot axis and a fourth pivot axis that are activated when the back is reclined relative to the seat.

A portable lumbar support and ergonomic chair having a lumbar support. The lumbar support has a seat hingedly coupled to a seat back having a teardrop-shaped lumbar support seat back cushion. A rigid back support portion may be rotated forward about hinges to collapse substantially parallel to the seat frame and backward to open to a variety of angles with respect to the seat frame. The seat back freely pivots around an upper lateral axis, and the rigid back support portion is linearly adjustable to space the seat back toward and away from the hinges to enable raising or lowering the upper lateral axis and thus the seat back with respect to the lower lateral axis. This provides multiple ways of changing which part of the teardrop-shaped lumbar support curve hits your lumbar curve for proper support. Variable lumbar lordotic support is thus provided.

A spring actuated rocking mechanism can be attached to the legs of a collapsible chair to allow for the user to rock in the collapsible chair. The mechanism may be attached at the factory or retrofitted to the chair. The rocking mechanism can be attached to the end of a leg or disposed within a leg, having a leg portion above and below the mechanism.

An assembly for a chair and a chair including the same are provided. The assembly includes a body coupled to an upper portion of a leg of the chair, a pair of supports extending forward from opposite sides of the body and coupled to a bottom surface of a seating part, and a pair of connecting frames extending backward from the opposite sides of the body, bent upward, and shaft-coupled to the opposite sides of the body and the seating part. A tilting operation is performed to rotate downward the seating part and a backrest to adjust inclinations of the seating part and the backrest using a weight of a user applied to the seating part and elastic force of the support and the connecting frame.

A chair having a chair base (1), a seat part (5, 6, 7, 8) connected thereto, a backrest (9, 16, 17) connected thereto, the seat 5 part (5, 6, 7, 8) pivotable about at least one horizontal or inclined horizontal axis and the backrest (9, 16, 17) are spatially adjustable. The seat part (5, 6, 7, 8) has at least three seat elements (5, 6, 7) that can be adjusted in relation to one another and whose operating positions can be adjusted individually.

A chair having a chair base (1), a seat part (5, 6, 7, 8) connected thereto, a backrest (9, 16, 17) connected thereto, the seat 5 part (5, 6, 7, 8) pivotable about at least one horizontal or inclined horizontal axis and the backrest (9, 16, 17) are spatially adjustable. The seat part (5, 6, 7, 8) has at least three seat elements (5, 6, 7) that can be adjusted in relation to one another and whose operating positions can be adjusted individually.

A recliner (1), including a reclining surface (2) and a substructure (3) that can be set on a base and supports the reclining surface (2), the substructure (3) including at least one stand (4) and at least one spring element (5) that is positioned between the stand (4) and the reclining surface (2), the reclining surface (2) being mounted on the spring element (5), the spring element (5) elastically pretensioning the reclining surface (2) in the direction (6) leading away from the stand (4), and the reclining surface (2), when unloaded, being held in an elastically pretensioned manner by a limiting element (7) of the recliner (1).