A resilient supporting structure of chairs which is used as a cushion or a back pad on a chair has multiple resilient components and multiple flexible supporting components. The resilient components and the flexible supporting components are woven and interlaced at right angles to form a bearing body. The resilient components are resilient elements which are extendable and compressible. The resilient components offer a resilient support. The flexible supporting components are flexible elements which are non-extendable and non-compressible. The flexible supporting components are woven and interlaced with the resilient components at right angles and generate appropriate and dispersed binding force between the resilient components. Therefore, the flexible supporting components effectively limit the distance between the resilient components while being forced and deforming By this, the resilient supporting structure of chairs maintains the comfortable bearing ability, and avoids being over forced and causing elastic fatigue on the resilient components.

A supporting apparatus of a chair includes a frame, two fabrics, two liners and a cushion. The frame is formed with two grooves extending along the frame. The depth of each of the internal and external grooves is larger than the width of the same. Each of the fabrics includes a wrapper extending around a contact portion and wrapping one of the liners. The wrapper of each of the fabrics and the corresponding liner are fitted in one of the grooves so that the contact portion of the fabric is stressed. The cushion is sandwiched between the contact portions of the fabrics.

The present invention is a seat bottom suspension system adapted to provide a varying spring constant. An embodiment includes a first plurality of generally flat elongated biasing members in communication with an axle adapted to translate in a direction generally parallel with the longitudinal axis of the biasing members. An embodiment may include a second set of flat elongated biasing members set at a lower height than the first plurality of flat elongated biasing members to provide a progressive increase in the spring constant as the down force seen on the seat increases.

An office system including a first component and a second component moveable relative to the first component. A distance and/or force multiplier is disposed between and coupled to the first and second components. The distance and/or force multiplier includes a shape memory material, wherein the shape memory material is contractible between at least a non-energized state and an energized state in response to an application of energy. The distance and/or force multiplier moves the second component relative to the first component when the shape memory material is contracted to the energized state.

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.

A chair having a backrest having an upper backrest section and a lumbar section, wherein the lumbar section is provided with a plurality of perforations and is elastically deformable to allow a backward tilting movement of the upper backrest section under a backward thrust applied from a user's back, and wherein the perforations stop the backward tilting movement of the upper backrest section in a position of maximum backward tilt of the upper backrest section.

Fabric for a modular chair suitable for defining a surface in use and for supporting a user when seated on the chair, and a perimeter area defined by edges of the surface. The fabric includes, at the surface, a periodic weave, the base of which includes at least one main filament, inside of which at least one secondary filament is also inserted, arranged in a weft along a predetermined trajectory. The main filament and the secondary filament are mutually and tightly attached at the perimeter area. The fabric includes at least one spool defining a long element trapped inside part of the fabric along the perimeter area wherein the weaving of the main filament creates a tubular shape suitable for housing the spool, and the secondary filament at least partially wraps the spool to mutually block the main filament and the secondary filament at the spool.

A seating structure includes a shell having a central portion, opposite outer peripheral edges laterally spaced from opposite sides of the central portion, and at least one biasing array disposed between each of the opposite sides of the central portion and a respective outer peripheral edge. Each of the biasing arrays includes a plurality of spaced apart support members and at least one connector connecting adjacent support members within each array. The biasing array may include a plurality of biasing arrays, with at least one connector connecting adjacent biasing arrays. A second shell may be connected to the outer peripheral edges of the first shell, with an open space defined there between. Each of the opposite outer peripheral edges is independently deflectable in response to a load being applied to the second shell.

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 seat assembly includes a base and a support platform spaced above the base. The support platform includes a pad having a hinge portion defining a flex region, wherein the pad is pivotable about the flex region. A link has a lower portion coupled to the base and an upper portion coupled to the pad, wherein the upper portion is pivotable with the pad about the flex region.