An adaptable chair with multiple adjustable components that may be configured by the user for various seating positions, particularly to change between conventional and cross-legged seating position. The adaptable chair's seating surface is comprised of a set of separate surface components for each of the user's right and left thighs. In a conventional seating configuration, the seating surface components are in a closed or joined position and the footrest in an unobtrusive position. To configure the chair for cross-legged seating, the seat components for each thigh may be moved apart to allow a user cross-legged seating position and rest the feet and lower legs upon the footrest. The disclosure describes various means of adjustment to the thigh supports and footrest, and mechanisms for actuating the various configurations to maximize comfort and ease of use.

The invention discloses a double folding chair with rotation angles. The double folding chair comprises four backrest pipes and two armrest pipes, wherein the a wrest pipes and the backrest pipes form a folding chair frame, rotation-angle transverse-bracing pipes are arranged between the two backrest pipes in the middle so that a flare angle can be formed between two chair backs, and intermediate connecting pieces which can rotate coaxially are arranged on a front support of the folding chair frame so as to be matched with the rotation-angle transverse-bracing pipes. Since the flare angle can be formed between two chair bodies, chair users can communicate conveniently, and the double folding chair has the advantages of being reasonable in structure, good in user experience etc.

Seating assemblies and methods are disclosed. A seating assembly can comprise a seat, a back support, and a frame component. The frame component can extend from a bottom portion, positioned near an underside of the seat, to a top portion, configured to maintain the back support at a position above the seat. The back support can laterally extend from a left edge portion to a right edge portion and can include a spring member at or near each of the left and right edge portions. The spring member can include at least one undulation or are providing integrated compression adaptation to a user. The seating assembly can further comprise a tilt mechanism, engaged with the frame component, including one or more leaf springs and a spring contact assembly. The spring contact assembly can be positioned on a top side of the one or more leaf springs.

The invention discloses a double folding chair with rotation angles. The double folding chair comprises four backrest pipes and two armrest pipes, wherein the a wrest pipes and the backrest pipes form a folding chair frame, rotation-angle transverse-bracing pipes are arranged between the two backrest pipes in the middle so that a flare angle can be formed between two chair backs, and intermediate connecting pieces which can rotate coaxially are arranged on a front support of the folding chair frame so as to be matched with the rotation-angle transverse-bracing pipes. Since the flare angle can be formed between two chair bodies, chair users can communicate conveniently, and the double folding chair has the advantages of being reasonable in structure, good in user experience etc.

Disclosed is a functional chair capable of adjusting a height of a seat. The functional chair includes a first seat configured to support a left pelvis, a second seat provided at a right side of the first seat, a frame provided below the first seat and the second seat, a backrest protruding from one side of the first and second seats, a seat pressure measuring unit which is respectively provided on the first seat and the second seat, a controller which receives the first pressure value and the second pressure value from the seat pressure measuring unit, a memory which stores in advance drive command information corresponding to a difference between the first pressure value and the second pressure value, a first height adjusting unit provided between the first seat and the frame, and a second height adjusting unit provided between the second seat and the frame.

A sensory upright chair system to provide deep touch pressure to a person and method of use. The system includes a frame, a pump, a pair of inflatable air tubes, a pressure release valve, hoses and hardware, a pressure sensor, and a fabric cover. The pump and pressure sensor are connected to a power supply, and connected to the air tubes and pressure release valve via hoses and hardware. Switching on the power supply provides controlled inflation to the air tubes. A user sits in the chair between deflated air tubes. As the pressure in the air tubes increase, deep touch pressure is applied to the occupant's body where the air tubes contact the occupant. The fabric cover provides a comfortable barrier between the occupant and the air tubes. Deep touch pressure is thus applied to the occupant via contact with the tubes through the fabric cover.

A chair back height adjustment mechanism comprises a guide having an abutment surface at a lateral side of the guide which extends along an adjustment direction. The chair back height adjustment mechanism comprises an adjusting device supported on the guide so as to be displaceable along the adjustment direction. The adjusting device comprises a carrier, a coupling member which is moveably supported on the carrier, and a bias mechanism. The coupling member has a contact face shaped to abut on the abutment surface of the guide and a slanted face. The bias mechanism is operative to apply a force onto the slanted face to urge the contact face of the coupling member against the abutment surface of the guide.

A seat structure comprises a base configured to be a chair base assembly; a seat support located above the base, wherein a front part of the seat support has rotary connection with the front part of the base through a transition link; a chair back assembly having rotary connection with a rear part of the base through a pivot; a lever driving member linked between the chair back assembly and the seat support, and having rotary connection with a rear part of the seat support, wherein the lever driving member and the seat support are approximately on the same surface. When the chair back assembly rotates rearward around the pivot from the initial position, the rear part of the seat support is raised diagonally to the rear through the lever driving member, meanwhile the transition link and the front part of the seat support are pulled up.

A vibrating system for cutaneous stimulation by means of proprioceptive resonance comprises elements (12, 13, 14, 15, 16, 17) for supporting the user's body which are positioned in specific zones for providing support and for specific administration of the proprioceptive stimulation modulation. The supports consisting of separate elements are situated in the nuchal zone, dorso-lumbar zone, buttocks zone, hand zone, popliteal zone and heel zone so as to keep the body supported only in these zones and in a semi-supine position. Each support element, except in some cases the support element (12) for the nuchal zone, is provided with a proprioceptive stimulation vibrating unit (25, 26, 40, 50, 60, 70) for transmitting to precise zones of the body's skin a controlled vibration upon emission of a programmed command from an electronic control unit (22).

A seat assembly for task-oriented seating comprises a seat support and a seat coupled to the seat support. The seat is movable under load, such as from the user's weight and movements, relative to the seat support. The seat has a cushion molded over a supporting armature with multiple bias elements. The seat and seat support are configured to deflect by predetermined amounts at defined locations over an extent of the seat assembly. In this way, the seat assembly provides for a range of comfortable and effective positions for users engaged in different active motions and having different preferences and sizes.