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 ergonomic chair comprising a seat, a lower leg support, a chest support and a hip support. The seat is configured to support the posterior thigh and/or buttocks of a seated user, the seat being configured to urge the hip of the seated user in a forward direction. The lower leg support is configured to support the anterior side of the lower legs of the seated user. The chest support is configured to support the chest of the seated user in a forward leaning position of the seated user. The hip support is configured to support the anterior hip of a seated user as the seat urges the seated user’s hip forwardly towards the hip support.

An ergonomic chair comprising a seat, a lower leg support, a chest support and a hip support. The seat is configured to support the posterior thigh and/or buttocks of a seated user, the seat being configured to urge the hip of the seated user in a forward direction. The lower leg support is configured to support the anterior side of the lower legs of the seated user. The chest support is configured to support the chest of the seated user in a forward leaning position of the seated user. The hip support is configured to support the anterior hip of a seated user as the seat urges the seated user’s hip forwardly towards the hip support.

A portable cushion system includes a superior cushion section configured for placement under the user's head and upper torso, a midsection cushion section configured for placement under the user's seat and lower back, a proximal inferior cushion section configured for placement under the user's upper legs, a distal inferior cushion section configured for placement under the user's lower legs, two straps coupled on one end to the superior cushion section, two fastener terminals located on the distal inferior cushion section, and configured for fastening to the straps, and wherein when the superior, midsection, proximal inferior, and distal inferior cushion sections are folded, the straps are configured for use as shoulder straps for securing and transporting the system.

A method and associated systems for furniture-enabled monitoring and discouragement of sedentary behavior. One or more sensors embedded into a computer-monitored and computer-controlled piece of furniture determine that a user has sat or reclined on the piece of furniture for a predetermined period of time. In response, controllers embedded into the furniture are directed to make the furniture less comfortable in order to encourage the user to get up. In some cases, if the user does not get up, the controllers continue to make the furniture increasingly uncomfortable. Once the user does get up, the furniture is restored to its original comfortable condition after a specified period of time.

A method and associated systems for furniture-enabled monitoring and discouragement of sedentary behavior. One or more sensors embedded into a computer-monitored and computer-controlled piece of furniture determine that a user has sat or reclined on the piece of furniture for a predetermined period of time. In response, controllers embedded into the furniture are directed to make the furniture less comfortable in order to encourage the user to get up. In some cases, if the user does not get up, the controllers continue to make the furniture increasingly uncomfortable. Once the user does get up, the furniture is restored to its original comfortable condition after a specified period of time.

A seat back for an office chair includes a knit material for extending over a structural frame. The knit material can be formed in a single knitting operation to include cushioning characteristics that vary across different regions of the knit material. The knit material may be a weft knit material having a first layer, a second layer, and a third layer, wherein the third layer is inlayed between the first and second layers and the inlay material is different from at least the first and second layers and provides a degree of cushioning between the first and second layers. The first and second layers are knit according to a predetermined pattern, the predetermined pattern determining crossing lines where the first and second layers cross one another and fix the third layer in position with respect to the first and second layers. The predetermined pattern is differentiated between regions of the back support, such that a first region of the back support has a higher density of crossing lines than a second region of the back support, the first region providing a different degree of cushioning than the second region.

A foam-based seating furniture with an enclosure is provided. The foam-based seating furniture includes main body, a cutout opening formed in the main body, fitted fabric configured to encase the main body, and a removable nesting insert configured to friction fit within the cutout opening. The removable nesting insert can be inserted into the cutout opening, or removed, to provide a myriad of seating arrangements. The main body can be provided in a variety of geometries, including a square with a square removable nesting insert, a circle with a base and a circular removable nesting insert, and a hexagon having a circular nesting insert.

A seat has a supporting frame being rigid, two seat cushions disposed above the supporting frame, and two supporting members. The supporting frame has a main body and four side bodies fixedly mounted on two front ends and two rear ends of the main body. The supporting members are mounted on bottom surfaces of the seat cushions and are connected to the supporting frame. Each one of the supporting members has multiple supporting elements respectively located at a front half section and a rear half section of a corresponding one of the seat cushions. Each one of the supporting elements has a guiding rod mounted on the supporting frame and a main spring disposed around the guiding rod. The seat provides good support by the supporting frame and the supporting members and provides a cushioning performance by the main spring.

A dampening system is efficient in dampening vibration through a wheelchair frame. The system allows a lower base frame and wheels to be rigidly attached, while an upper seat frame is joined to the base frame through elastomeric dampening bushings to isolate the seat frame from the base frame. The bushings may be hidden in vertical upright tubes of the base frame. The bushings can also be used for supporting front caster forks and/or a rear axle assembly in isolation to the base frame.