A lower chair for supporting an upper chair on which a user sits. The lower chair including a base, a swivel mechanism supported by the base and defining a vertical swivel axis, and a four-bar linkage mounted to the swivel mechanism for rotation about the swivel axis. The four-bar linkage includes a coupler link that moves about a coupler curve. The lower chair also includes a column having a lower end affixed to the coupler link for movement of the lower end along the coupler curve. The column defines a column axis and is adapted to support the upper chair.

The present invention relates to support apparatus for supporting at least a portion of a gluteal region of a user while the user is seated in a seating apparatus comprising a seating surface, a back support surface and a transition region at the intersection of the seating surface and the back support surface. The support apparatus a support member structured to support at least a portion of the gluteal region of the user. The support apparatus further comprises a support element structured to position the support member at the transition region of seating apparatus such that the support member extends between the seating surface and the back support surface of the seating apparatus.

The present disclosure is directed to a method of collecting and using data obtained from an intelligent automated chair to optimize workflow and increase a user or group's health and productivity. Sensors in the intelligent automated chair can include motion, touch, heart rate, weight, presence, sound, keystroke, etc. In addition, posture, health, and productivity data are collected and compared over periods of time along with a learning algorithm to recommend specific operating models to increase a user or group's overall posture, health, and productivity. The methods and systems are configured to recommend action steps based on usage that can include a chair training program, nutritional training program, mental health training, bonus consideration, rewards program, advancement consideration, etc. Furthermore, the metrics and recommendations can assist with addressing issues associated with absenteeism and presenteeism. Lastly, data collected can be used to create forecasting models based on productivity and health cost.

The invention relates to a chair, having a chair base (1), a seat part (5, 6, 7, 8) connected thereto, a backrest (9, 16, 17) connected thereto, the seat part (5, 6, 7, 8) pivotable about at least one horizontal or inclined horizontal axis and the backrest (9, 16, 17) are spatially adjustable. The seat part (5, 6, 7, 8) has at least three seat elements (5, 6, 7) that can be adjusted in relation to one another and whose operating positions can be adjusted individually.

A functional sitting chair according to an embodiment of the present disclosure effectively distributes the user's body pressure even when the user sits for a long time, stably supports the user's waist and back, provides a heating function, and maintains great comfort by effectively circulating air through a pattern formed on the cushion.

A chair seat capable of adjusting a width contains a base, an adjustment assembly, a first sitting portion, a second sitting portion, an adjustable clamp portion, a first guide member, a second guide member, a central shaft, and a screw bolt. The base includes a threaded orifice, multiple locking orifices, a support portion, and a groove. The adjustment assembly includes a first wing and a second wing. The first sitting portion includes a first tilted supporting face. The second sitting portion includes a second tilted supporting face. The adjustable clamp portion includes a guiding orifice. The first guide member includes a first oblique press face and a first connection orifice. The second guide member includes a second oblique press face and a second connection orifice. The central shaft includes an abutting face, multiple fixing orifices, and multiple screws inserting. The screw bolt includes a rotary knob and a non-threaded section.

A functional sitting chair according to an embodiment of the present disclosure effectively distributes the user's body pressure even when the user sits for a long time, stably supports the user's waist and back, provides a heating function, and maintains great comfort by effectively circulating air through a pattern formed on the cushion.

The dynamic postural device comprises two oscillating elements having respectively: —a seating portion to support a buttock of a user; a supporting portion opposite to the seating portion and of a substantially convex shape; in which the supporting portion is adapted to allow the oscillation of the respective oscillating element as a result of the seating of the user.

The invention relates generally to a lightweight, collapsible, and portable wheeled seat, e.g., a wheeled office chair or stool, for travel, storage, and mobility. The seat includes a seat base member and a seat surface member collapsible between an open, extended position, which is configured to provide a seating surface, and a collapsed, closed position. The seat surface member includes a central seating surface member fixed to the seat base member that has an outer perimeter, and a pair of oppositely disposed and generally u-shaped seating surface members pivotally secured to the seat base member. Each of the generally u-shaped seating surface members include a pair of leg portions that extend from a base portion thereof, or an inward directed perimeter and a portion of each inward directed perimeter has a shape that substantially complementarily corresponds to a shape of a portion of the outer perimeter of the central seating surface member.

An office-type chair includes a base, a height-adjustable pedestal extending upward from the base, a seat assembly including a rear seat part and a front seat part, and a linkage system connecting the pedestal to the seat assembly. The linkage system is adapted to pivot the seat assembly between a lowered position to serve as a task chair and an elevated position to serve as an elevated sitting support. A backrest arrangement may extend from the seat assembly. In the lowered position, the front and rear seat parts are both generally horizontally oriented. In the elevated position, the rear seat part may have a slight forward tilt and be positioned higher than in the lowered position, and the front seat part may extend at a downward angle relative to the rear seat part.