A foldable chair includes a lower hub assembly and an upper hub assembly. The lower hub assembly has foldable legs for supporting the chair. The upper hub assembly has a plurality of bars, and webbing mounted on the bars. The bars are movable so that the webbing can be folded and unfolded. The webbing provides a seating area when unfolded. The chair also includes a center shaft assembly that facilitates tilting and swiveling of the seating area in relation to the lower hub assembly.

A chair comprises a seat pan member, a seat back member having a lumbar support member, a lumbar support assembly operatively connected to the lumbar support member and configured for moving the lumbar support member, with respect to the seat pan member and the seat back member, between at least a first position and a second position, and an actuator configured to operate the lumbar support assembly for movement of the lumbar support member between at least the first position and the second position. When the lumbar support member is in the second position, the lumbar support member is positioned forwardly, in a direction toward the seated user's lower back, relative to the seat back member so as to enable the user to be seated forwardly on the seat pan member while being engaged with the lumbar support member.

The present invention provides a chair having a swing motion function and a swing module for use therein, the chair comprising: a leg module formed to be supported on the floor; a seat module disposed above the leg module and formed to support the body of a user; and a swing module configured to connect the leg module and the seat module and swing the seat module to both sides of the user with reference to the leg module as the user sitting on the seat module moves from side to side, wherein the swing module comprises: a lower fixed unit coupled to the leg module; an upper moving unit coupled to the seat module; and a link unit having a lower connection end rotatably connected to the lower fixed unit and an upper connection end rotatably connected to the upper moving unit so as to allow the upper moving unit to swing about the lower fixed unit.

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 recliner or lift and recliner chair is provided having a recline or lift and recline chair mechanism with preferably with at least one recline or lift-recline actuator that controls a reclining movement or a lifting and reclining movement. The chair mechanism has a recline or lift-recline base, a seat and a back connected thereto. For additional functionality, a cradle assembly is provided in order to provide a cradling movement to the recline or lift-recline base. The cradle assembly can be provided by a system of standoffs and pivot connections, which can be direct or use links, or can be configured with a track and roller or slide system in order to achieve a desired cradling movement. A cradle actuator is connected between the cradle base and the recline or lift-recline base. A controller is provided that controls movement of the cradle actuator and preferably at least one recline or lift-recline actuator.

In view of various movement of a seated person, when giving the left-right swinging operation to the seat in the non-conventional aspect, a chair configured such that the back can perform a new movement suitable for the left-right movement of the seat and return to the predetermined position when the seated person leaves a seat, is realized. For the purpose, a back 6 is arranged behind a seat 5, and the back 6 has an operation mechanism 6M turning-movably supporting the load received from a seated person in a left-right direction in a front view, and when the load is applied, at least a part of guide part 65a, 66a of the operation mechanism 6M is separated and the back moves freely, and when the applied load is removed, the back automatically returns to the neutral position along the guide part 65a, 66a.

A chair includes a seat pan member, a movement support frame, and at least two movement support members operatively connected to the seat pan member and the movement support frame. The at least two movement support members are configured to support the seat pan member in a floating manner for dynamic movement with respect to the movement support frame in at least one degree of freedom in a horizontal seating plane.

A seat includes a support having a first coupling hole and a second coupling hole disposed therein. The seat also includes a seat cradle having a back, a bottom, a first side fixedly connected to the back and the bottom, and a second side fixedly connected to the back and the bottom. The seat cradle has a neutral position in which a top portion of the back is positioned forward of a bottom portion of the back, and a rear portion of the bottom is positioned below a forward position of the bottom. The seat also has a first cradle coupler extending from the first side of the seat cradle, such that the first cradle coupler cannot rotate with respect to the first side. The seat further includes a second cradle coupler extending from the second side of the seat cradle, such that the second cradle coupler cannot rotate with respect to the second side. The first cradle coupler is received in the first coupling hole and the second cradle coupler is received in the second coupling hole.

A flange part 31b is provided on a vertical surface 31a on the plate member PM of the front-rear swing part 3, the flange part 31b has a guide surface 31b1 extending to lateral direction and moving the rolling body 45 in the longitudinal direction, a lateral direction dimension of the guide surface 31b1 is greater than a thickness of the plate member PM, the flange part 31b and the portion of the plate member PM forming the vertical surface 31a around the flange part 31b are integrally formed of metal; and the flange part 31b has a shape that goes around the circumference of the guide hole 34 opened in the vertical surface 31a, and then, the rolling body 45 are provided independently to the left and right, to be able to a roll along the guide surface 31b1.

A recliner or lift and recliner chair is provided having a recline or lift and recline chair mechanism with preferably with at least one recline or lift-recline actuator that controls a reclining movement or a lifting and reclining movement. The chair mechanism has a recline or lift-recline base, a seat and a back connected thereto. For additional functionality, a cradle assembly is provided in order to provide a cradling movement to the recline or lift-recline base. The cradle assembly includes pivot connections between recline or lift-recline base and the cradle base. A cradle actuator is connected between the cradle base and the recline or lift-recline base. A controller is provided that controls movement of the cradle actuator and preferably at least one recline or lift-recline actuator.