A mechanism for an office chair is structurally particularly simple and consequently comparatively inexpensive, but nevertheless extremely variable. Both the seat support and the backrest support are articulated by way of a common pivot axis. The seat support is connected in an articulated manner to the base support by way of at least one pivot bolt and is pivotable relative to the base support. The backrest support is connected in an articulated manner to the base support by way of the at least one pivot bolt and is pivotable relative to the base support.

A seat assembly is provided and may include a base assembly, a first arm, a seat bottom assembly, a second arm, and an adjustment arm. The base assembly may be mounted to a vehicle. The first arm may be rotatably coupled to the base assembly and may be operable to rotate relative to the base assembly about a first axis of rotation. The seat bottom assembly may be rotatably coupled to the first arm and may be operable to rotate relative to the first arm about a second axis of rotation. The second arm may be rotatably coupled to the seat bottom assembly and may be operable to rotate relative to the seat bottom assembly about a third axis of rotation. The adjustment arm may include an adjustment mechanism, and may be rotatably coupled to the second arm and rotatably coupled to the base assembly. The adjustment mechanism may be operable to rotate the adjustment arm relative to the base assembly about a fourth axis of rotation.

An adjustable folding cabana having a frame with legs is disclosed. A seat is supported on said frame. A front support member, a rear support member and an intermediate support member support a cabana fabric roof. The front support member is movable between a rear support position, an intermediate support position and a front support position. A guide rail is attached to the frame beneath said seat which has a front stop, an intermediate stop and a rear stop. Manipulating a control rod causes a cabana fabric hood to be fully extended when the rod is secured in the front stop, to be partially collapsed when the rod is secured in the intermediate stop, and to be fully collapsed when the rod is secured in the rear stop.

An adjustable chair includes upper and lower base members, a seat assembly secured to the upper base member, and a chair adjusting mechanism. In an embodiment the upper base member is connected to the lower base member by first and second linking members each having a first end connected to the lower base member and a second end slideably received in corresponding first and second arcuate tracks disposed in the upper base member, such that movement of the second ends into and out of the tracks results in vertical movement of the seat assembly relative to the base. In a further embodiment the seat bottom and seat base comprise cooperating arcuate rails, tracks, and/or bearing members, where cooperative action of the arcuate rails, tracks, and/or bearing members enables the seat bottom to tilt relative to the seat base. In a further embodiment the seat bottom and seat back comprise cooperating arcuate rails, tracks, and/or bearing members, where cooperative action of the arcuate rails, tracks, and/or bearing members enables the seat back to recline relative to the seat bottom.

Self-adjusting furniture, seating, and accessories disclosed. When the user applies a force to the seating by shifting his or her center of gravity, the backrest and/or seat/bed portions of the seating/furniture move in response to the force to recline or adjust the seating/furniture or accessories. The user can return the seating to an upright position by again shifting his or her center of gravity. The angle of the backrest and/or seat/bed portions can vary relative to the ground as the user moves. Continuously varying the angle of both the backrest and seat/bed portions of the seating/furniture or accessories relative to the ground may improve a user's seating comfort, for example, by decreasing or negating the user's need to shift position on the seat when reclined or continuously responding the user's shift in position.

Powered recliner chairs, assemblies for use in the chairs, and components for use in the assemblies are provided. Electrical systems for use in the chairs, and components for use in the assemblies are provided. Control systems and methods for operating powered recliner chairs are also provided. Any given chair may be locally and/or remotely controlled.

Novel tools and techniques might provide for implementing seat lifting. In various embodiments, a seat lifter might include one or more first pistons, one or more second pistons, and a seat portion. The one or more first pistons, when actuated (e.g., in response to user input), might cause a rear portion of the seat portion to lift relative to a front portion of the seat portion, the rear portion of the seat portion being lifted by a first height above a seat to which the seat lifter is affixed. The one or more second pistons, when actuated, might cause the front portion of the seat portion to lift by a second height above the seat, the second height being less than the first height. In some instances, the first pistons and the second pistons might be actuated serially (in either order), or might be actuated concurrently.

Novel tools and techniques might provide for implementing seat lifting. In various embodiments, a seat lifter might include one or more first pistons, one or more second pistons, and a seat portion. The one or more first pistons, when actuated (e.g., in response to user input), might cause a rear portion of the seat portion to lift relative to a front portion of the seat portion, the rear portion of the seat portion being lifted by a first height above a seat to which the seat lifter is affixed. The one or more second pistons, when actuated, might cause the front portion of the seat portion to lift by a second height above the seat, the second height being less than the first height. In some instances, the first pistons and the second pistons might be actuated serially (in either order), or might be actuated concurrently.

Various aspects of the present disclosure are directed to adjustable chairs with a plurality of adjustment points to facilitate enhanced user mobility and increase a user's physical activity through guided exercises and stretches. In one example embodiment, a chair is disclosed including a lifting mechanism to assist a user from a seating to a standing position and facilitates standing stretches through a number of motion and rotation mechanisms.

Various aspects of the present disclosure are directed to adjustable chairs with a plurality of adjustment points to facilitate enhanced user mobility and increase a user's physical activity through guided exercises and stretches. In one example embodiment, a chair is disclosed including a lifting mechanism to assist a user from a seating to a standing position and facilitates standing stretches through a number of motion and rotation mechanisms.