An improved virtual reality system comprises a chair 110 integrated with a pedestal 120, which contains a motion platform 150 and base 160. The chair 110 can be rotated continuously in the yaw axis by a stepper motor 230 and substantially in the pitch axis by an additional stepper motor 240 in coordination with the content of the VR display as directed by a chair controller located on the motion platform 150.

An improved virtual reality system comprises a chair 110 integrated with a pedestal 120, which contains a motion platform 150 and base 160. The chair 110 can be rotated continuously in the yaw axis by a stepper motor 230 and substantially in the pitch axis by an additional stepper motor 240 in coordination with the content of the VR display as directed by a chair controller located on the motion platform 150.

A chair support shell has an integral back portion, seat portion, and joining portion between the back portion and the seat portion. At least a major portion of the support shell comprises a compliant structure, the compliant structure having a plurality of cells interconnected by a plurality of resilient members. The compliant structure provides compliance in the seat portion, compliance in the back portion, and compliance in the joining portion. The compliant structure enables recline of the back portion relative to the seat portion.

A hanging collapsible chair set may include a rack and a collapsible chair, wherein the collapsible chair can be hung on the rack. The collapsible chair has a main body, a seating unit, a plurality of supporting frames and a plurality of connecting units. In one embodiment, each supporting frame is curved with two ends, and each end is pivotally connected with the main body of the collapsible chair. The seating unit is also pivotally connected with the main body. The connecting units are configured to flexibly connect the seating unit with one of the supporting frames, two of the supporting frames, and one of the supporting frames with the main body. In one embodiment, the connecting unit can be a string.

A hanging collapsible chair set may include a rack and a collapsible chair, wherein the collapsible chair can be hung on the rack. The collapsible chair has a main body, a seating unit, a plurality of supporting frames and a plurality of connecting units. In one embodiment, each supporting frame is curved with two ends, and each end is pivotally connected with the main body of the collapsible chair. The seating unit is also pivotally connected with the main body. The connecting units are configured to flexibly connect the seating unit with one of the supporting frames, two of the supporting frames, and one of the supporting frames with the main body. In one embodiment, the connecting unit can be a string.

A body support structure includes a frame and a membrane attached to the frame. The membrane includes elastomeric filaments. The membrane includes different regions with different stiffness. The membrane may form a part of a seat or a backrest.

A body support structure includes a frame and a membrane attached to the frame. The membrane includes elastomeric filaments. The membrane includes different regions with different stiffness. The membrane may form a part of a seat or a backrest.

A seating arrangement includes a base, a lower shell including a first portion coupled to the base and comprising a substantially horizontal portion, a curved transition portion and a backrest portion, a pair of laterally spaced front links extending upwardly from a forward portion of the first portion, a rear link extending upwardly from a rearward portion of the first portion of the lower shell and forwardly of the transition region of the lower shell, and an upper shell comprising a seating portion coupled to the pair of front links and to the rear link, a curved transition portion spaced apart from the curved transition portion of the lower shell and defining an open lateral pass through therebetween, and a backrest portion connected to the backrest portion of the lower shell.

A body support structure includes a shell having a central region, an outer peripheral region spaced from the central region, and at least one array extending between the central region and the outer peripheral region. The at least one array includes a plurality of spaced apart support members and at least one connector connecting adjacent support members within each array. The support members of the at least one array are progressively divided between the central portion and the outer peripheral edge.

A foldable cushion includes a cushion mechanism and a connecting mechanism. The cushion mechanism includes a seat unit and a back unit. The seat unit and the back unit are juxtaposed and movable relative to each other along a transverse folding line. The connecting mechanism includes a first endless cord and a second endless cord. The first endless cord and the second endless cord respectively extend through the transverse folding line and are flexibly arranged on the seat unit and the back unit. When the seat unit and the back unit are moved relative to the transverse folding line, the first endless cord and the second endless cord are stretched, so that the seat unit and the back unit are positioned at an expanded state by the elastic force of the first endless cord and the second endless cord.