Abstract: A bathtub comprising a tub having an enclosure defined by at least one sidewall for holding a water capacity, a doorway on the sidewall for providing access to the tub, a door mountable onto the doorway for holding at least two water levels in the tub; an actuator allowing a user to move the door between at least three positions; a mechanical drain for emptying the tub, a double reservoir for receiving water from the tub through the drain and the door drip, a control interface, door position sensors, water level detection sensors, a pressure sensor, and a controller configured to receive input controls signals from the control interface, receive input door lock position signals, receive input water detection signals, receive input pressure signals, send control signals to control a sealing valve of the door, and send control signals for operating a drain valve.

Abstract: A bathtub comprising a tub having an enclosure defined by at least one sidewall for holding a water capacity, a doorway on the sidewall for providing access to the tub, a door mountable onto the doorway for holding at least two water levels in the tub; an actuator allowing a user to move the door between at least three positions; a mechanical drain for emptying the tub, a double reservoir for receiving water from the tub through the drain and the door drip, a control interface, door position sensors, water level detection sensors, a pressure sensor, and a controller configured to receive input controls signals from the control interface, receive input door lock position signals, receive input water detection signals, receive input pressure signals, send control signals to control a sealing valve of the door, and send control signals for operating a drain valve.

Abstract: A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for flexing a lumbar area of the flexible sheet forwardly to provide an optimal ergonomic horizontal and vertical convex shape for postural lumbar support.

Abstract: A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for flexing a lumbar area of the flexible sheet forwardly to provide an optimal ergonomic horizontal and vertical convex shape for postural lumbar support.

Abstract: A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for flexing a lumbar area of the flexible sheet forwardly to provide an optimal ergonomic horizontal and vertical convex shape for postural lumbar support.

Abstract: A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for flexing a lumbar area of the flexible sheet forwardly to provide an optimal ergonomic horizontal and vertical convex shape for postural lumbar support.

Abstract: A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for flexing a lumbar area of the flexible sheet forwardly to provide an optimal ergonomic horizontal and vertical convex shape for postural lumbar support.

Abstract: A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for biasing an intermediate portion of the flexible sheet forwardly to both form the intermediate portion into a forwardly convex shape for postural lumbar support and also to tension the flexible sheet.

Abstract: A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for biasing an intermediate portion of the flexible sheet forwardly to both form the intermediate portion into a forwardly convex shape for postural lumbar support and also to tension the flexible sheet.

Abstract: A chair includes a base having a control, and a seat and a back tilt bracket pivoted to the control for synchronous movement. An extension is adjustably supported on the back tilt bracket and is pivotally connected to a back support structure and a backrest frame in a four-bar linkage arrangement. The extension is adjustable to change the angular position of the back when in the rest position, and further provides a back tilt axis that is located rearward of a rear edge of the seat, which provides a unique back movement upon recline that is more rearward and less downward than most synchrotilt chairs. The back support structure includes a spine assembly pivoted to a rear end of the extension and extends upwardly. Armrests are operably supported on the spine assembly for vertical adjustment by an armrest mount, and a handle on the armrests is operably connected to a latch on the armrest mount for easy adjustment of the armrests.