A seat positioning system includes a base frame having a pair of forward slots and a pair of rear slots, and a seat frame having a front end and a back end. The seat frame is coupled to the base frame and movable relative to the base frame. A first pair of linkages is slideably coupled to the pair of forward slots and connects the frames. A first pair of locking devices has a locked configuration adapted to prevent the first pair of linkages from sliding relative to the pair of forward slots and an unlocked configuration adapted to allow the first pair of linkages to slide relative to the pair of forward slots. A second pair of linkages slideably is coupled to the pair of rear slots and connects the frames. An actuator is pivotally connected to both the scat frame and the base frame and is configured to extend and contract to move the scat frame relative to the base frame.

A seat positioning system includes a base frame having a pair of forward slots and a pair of rear slots, and a seat frame having a front end and a back end. The seat frame is coupled to the base frame and movable relative to the base frame. A first pair of linkages is slideably coupled to the pair of forward slots and connects the frames. A first pair of locking devices has a locked configuration adapted to prevent the first pair of linkages from sliding relative to the pair of forward slots and an unlocked configuration adapted to allow the first pair of linkages to slide relative to the pair of forward slots. A second pair of linkages slideably is coupled to the pair of rear slots and connects the frames. An actuator is pivotally connected to both the scat frame and the base frame and is configured to extend and contract to move the scat frame relative to the base frame.

A seating arrangement includes a base, a seat mounted to the base, the seat having a width extending from a first side to a second side and a length extending in a forward direction from a rear side to a front side. The seating arrangement further includes a backrest positioned adjacent the rear side of the seat. The seating arrangement further includes a cushion length adjustment (CLA) coupled to the seat at the front side. The CLA has a width bisected by a centerline. A first side of the CLA is at least partially defined by a first curved surface extending downward in the forward direction and extending downward toward the base away from the centerline. A second side of the CLA is at least partially defined by a second curved surface extending downward in the forward direction and extending downward toward the base away from the centerline.

An adjustable chair can support an occupant that sits on a front portion of a seat cushion. When the user leans back, the chair can provide back support without requiring that the user slide rearwardly along the seat cushion, thereby providing back support to minimize, limit, or substantially eliminate lower back fatigue, discomfort, or the like. A back support of the chair can be located at a desired forward/rearward position based on the user's position on the seat. In some settings, the chair can be used by a card dealer who tends to sit on a forward portion of the seat when dealing cards. The back support can be positioned to comfortably support the dealer's back when, for example, the dealer sits generally upright. The chair can also be used by other individuals that frequently sit on the front of the seat cushion.

An adjustable chair can support an occupant that sits on a front portion of a seat cushion. When the user leans back, the chair can provide back support without requiring that the user slide rearwardly along the seat cushion, thereby providing back support to minimize, limit, or substantially eliminate lower back fatigue, discomfort, or the like. A back support of the chair can be located at a desired forward/rearward position based on the user's position on the seat. In some settings, the chair can be used by a card dealer who tends to sit on a forward portion of the seat when dealing cards. The back support can be positioned to comfortably support the dealer's back when, for example, the dealer sits generally upright. The chair can also be used by other individuals that frequently sit on the front of the seat cushion.

The present invention discloses a joyride mechanism for a furniture such as a bed, chair, sofa, crib, and the like, having attachments designed to impart a movement to the furniture for enjoyment purposes. The present invention provides an apparatus for applying vertical and horizontal motion to the furniture. The apparatus includes a mechanical frame with linear actuators (such as electrical linear actuators, hydraulic actuators or pneumatic linear actuators, or any combination thereof) that are controlled by a computer. The apparatus can optionally control illumination and speeds of multiple fans to provide a joyride experience to users of the furniture. The present invention also discloses a furniture with built-in sensors to determine the safety of users or people in proximity of the furniture. The present invention also discloses a mattress for a bed with a built-in computer. The present invention also discloses cushions for furniture with a built-in computer.

The invention relates to a seat (1), in particular an office chair, comprising a seat support (3) for a seating surface (6) and comprising a backrest support (4) of a backrest (5), which is held on the seat support (3) so as to be able to move in a tiltable manner to the side, wherein the backrest support (4) comprises two support arms (4a, 4b) which are configured to be flexible and/or articulated laterally and spaced apart from one another. Preferably, the seating surface (6) and/or the backrest (5) comprises a curved seat shell and/or backrest shell (6a, 5a) provided with a cover (6b, 5b) with a number of flexible curved ribs (15, 16) on the edge of the shell, wherein the cover is stretched by the seat shell and/or backrest shell (6a, 5a) such that when the cover (6b, 5b) is loaded, the bending of the curved ribs (15, 16) is altered.

The invention relates to a seat (1), in particular an office chair, comprising a seat support (3) for a seating surface (6) and comprising a backrest support (4) of a backrest (5), which is held on the seat support (3) so as to be able to move in a tiltable manner to the side, wherein the backrest support (4) comprises two support arms (4a, 4b) which are configured to be flexible and/or articulated laterally and spaced apart from one another. Preferably, the seating surface (6) and/or the backrest (5) comprises a curved seat shell and/or backrest shell (6a, 5a) provided with a cover (6b, 5b) with a number of flexible curved ribs (15, 16) on the edge of the shell, wherein the cover is stretched by the seat shell and/or backrest shell (6a, 5a) such that when the cover (6b, 5b) is loaded, the bending of the curved ribs (15, 16) is altered.

Chair (10, 100) with a seat section (14, 104), an underframe (12, 102) which supports seat section (14), and a seat back (16, 106), in which the seat back (16, 106) is mounted on underframe (12, 102) such that it may be pivoted around a rear transverse axis (26, 120) oriented crosswise to chair (10, 100), and seat section (14, 104) is at least partially deformable and is supported or reinforced by at least one stiff supporting element (28, 122) extending from the bottom end of seat back (16, 106) in the direction of seat section (14, 104) and being rigidly connected with seat back (16, 106), such that when a pivoting movement of seat back (16, 106) occurs, a portion of seat section (14, 104) positioned in front of the end of supporting element (28, 122) is raised or lowered depending on the direction of pivoting.

In a configuration in which a holder holding a controller is mounted on a seat part with a plate-shaped member, the exposure of the mounting part of the plate-shaped member on which the holder is mounted is eliminated. A seat device includes a pressure sensor measuring a value relating to the seated person's state, a vibration imparting device a vibration imparting operation, an ECU controlling the vibration imparting device corresponding to the measurement result of the pressure sensor, a holder holding the ECU, and a mounting bracket fixed to a lower frame such that the holder is mounted on the lower frame of a seat part. The mounting bracket includes a mounting projection on which a side wall of the holder is mounted in a predetermined mounting direction. When the side wall is mounted on the mounting projection, the mounting projection is covered with the side wall.