A chair support structure includes a base, a driving component, a first transmission component, a leg component, and a back component. The driving component can be connected to the base, the first transmission component is connected to the driving component. Both the leg component and the back component are connected to the first transmission component. The first transmission component can include a first transmission member. The first transmission member can include a first connection portion and a second connection portion, each of which has a first end and a second end opposite to each other. The first end of the first connection portion can be pivotally connected to the leg component. The second end of the first connection portion can be fixed to the second connection portion. An angle can be formed between the first connection portion and the second connection portion.

A chair support structure includes a base, a driving component, a first transmission component, a leg component, and a back component. The driving component can be connected to the base, the first transmission component is connected to the driving component. Both the leg component and the back component are connected to the first transmission component. The first transmission component can include a first transmission member. The first transmission member can include a first connection portion and a second connection portion, each of which has a first end and a second end opposite to each other. The first end of the first connection portion can be pivotally connected to the leg component. The second end of the first connection portion can be fixed to the second connection portion. An angle can be formed between the first connection portion and the second connection portion.

An adjustable chair frame with a back and seating surfaces that flex to conform to the shape, weight and movement of an occupant is disclosed. The chair form and proportions provide for a recumbent position that disperses the weight of the occupant more evenly, thereby reducing external and internal physiological point loading. The form also provides ergonomic articulation to minimize internal physiological stresses such as neck/back vertebral compression. Eccentric connections driven by a motor assembly allow positioning adjustment of the components of the chair. Additionally, an air pump assembly may be included to automatically adjust one or more air bladders provided on the interior of the chair frame.

A motion seat is described that includes a chassis, a seat frame, a seat cushion, a backrest, and a resilient hinge. The seat frame is attached to the chassis and the seat cushion and the backrest are each attached to the seat frame. The resilient hinge formed as a unitary body and may be formed from a resilient polymer. The seat cushion and/or the backrest is pivotably attached to the seat frame with the resilient hinge

A chair support device primarily for office use includes a lower support having rollers or feet for standing on the floor spaced apart from each other in predetermined distances, an upper support, and a receiving tube, as a support member, that has a central axis, connected to a central portion of the upper support, extends therefrom towards the lower support and is coupled to a central portion of the lower support by a ball joint that enables tilting of the receiving tube within an angular range relative to vertical and weight load to be taken predominately by the lower support. The support member is preferably in or close to the weight line of a chair held by the device.

Furniture is assembled from elastic modules enabling rapid and convenient assembly and disassembly. The elastic module has a spring, an outer covering layer, and an end member attached to an end face of the outer covering layer. A mattress includes a plurality of individual spring assemblies (145), with each spring assembly including at least one spring (134) and a spring cap (144, 150, 161, 164, 171, 184, 194, 204). Each spring cap has at least one first attachment fitting (168, 178, 174, 186, 196) and at least one second attachment fitting (169, 180, 176, 187) with each first attachment fitting engageable into or onto and removable from a second attachment fitting of an adjoining spring cap. The spring assemblies are attached to each other via the first and second attachment fittings, forming the individual spring assemblies into a spring core. A top pad is positioned on top of the spring core. The mattress can be quickly dis-assembled and stored in a compact space by removing the top pad and separating the spring assemblies from each other.

A support device has a main support surface for a person's body, including an auxiliary device influencing the main support surface shape. The auxiliary device includes: a group of supports supporting the main support surface, positioned on the side of the main support surface facing away from the body-supporting side, the supports each including a sub-support surface; an adjuster for each sub-support surface influencing the height of each sub-support surface. The device also includes a monitor for each sub-support surface monitoring the height of the respective sub-support surface; and a programmable control unit controlling the adjuster. The supports include an elastically bendable plate connected to the adjuster. The bending plate is connected to the sub-support surface to influence its height depending on the extent of bending imposed by the adjuster. The adjuster includes an electromotor on the concave side of the bending plate.

A motion seat is described that includes a chassis, a seat frame, a seat cushion, a backrest, and a resilient hinge. The seat frame is attached to the chassis and the seat cushion and the backrest are each attached to the seat frame. The resilient hinge formed as a unitary body and may be formed from a resilient polymer. The seat cushion and/or the backrest is pivotably attached to the seat frame with the resilient hinge.

A squatting stool may feature two opposed support plates with at least one variable width coil springs therebetween. The larger diameter portion of the springs should be located towards the bottom of the stool, thereby positioning the lower spring constant downward and allowing for collapse of the springs from the bottom upward.