A seat unit for a wearable sitting posture assisting device includes at least one sitting means designed to form an adjustable and/or self-adjusting seat surface to be used in at least one at least partly sitting posture and in a walking mode, and a frame means designed to receive a weight force of a person sitting on the sitting means that is mounted on the frame means, and to a wearable sitting posture assisting device with such a seat unit.

A device for moving the back and core muscles while sitting includes a rocking assembly that sits atop a base assembly, and optionally a height adjustment mechanism between the rocking assembly and the base assembly. The rocking assembly includes a rocking mechanism that sits between a base plate or platform and a seat. The rocking mechanism can be, for example, a hollow or solid hemispheric- or dome-shaped rocking mechanism, an eccentric bicylinder rocking mechanism, and/or a rocking mechanism based on an arrangement of halfpipe members. The rocking mechanisms of the exercise chair allow to the seat to rock, wobble, and/or swivel with a side-to-side rocking motion, a front-to-back rocking motion, or both a side-to-side rocking motion and a front-to-back rocking motion, and are attached to base plate and seat via a fastener that includes a solid strut that passes through the rocking mechanism and includes a plurality of Belleville washers.

A device for moving the back and core muscles while sitting includes a rocking assembly that sits atop a base assembly, and optionally a height adjustment mechanism between the rocking assembly and the base assembly. The rocking assembly includes a rocking mechanism that sits between a base plate or platform and a seat. The rocking mechanism can be, for example, a hollow or solid hemispheric- or dome-shaped rocking mechanism, an eccentric bicylinder rocking mechanism, and/or a rocking mechanism based on an arrangement of halfpipe members. The rocking mechanisms of the exercise chair allow to the seat to rock, wobble, and/or swivel with a side-to-side rocking motion, a front-to-back rocking motion, or both a side-to-side rocking motion and a front-to-back rocking motion, and are attached to base plate and seat via a fastener that includes a solid strut that passes through the rocking mechanism and includes a plurality of Belleville washers.

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.

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.

The present invention is an exercise seat comprising a base, a seat, and a movement device comprising a lower platform engaged with the base and an upper platform engaged with the seat. The movement device further comprises a movement mechanism engaged with the lower platform and the upper platform to cause a wobble movement of the upper platform and the seat while maintaining the upper platform and the seat in a stationary position.

The present invention is an exercise seat comprising a base, a seat, and a movement device comprising a lower platform engaged with the base and an upper platform engaged with the seat. The movement device further comprises a movement mechanism engaged with the lower platform and the upper platform to cause a wobble movement of the upper platform and the seat while maintaining the upper platform and the seat in a stationary position.

An armrest for office chairs includes a pad and a sleeve coupled to the chair structure. A tray, having longitudinal strips with seats at their ends, is integral with the sleeve and houses a play recovery element having externally protruding appendages, and the play recovery element has two central curved portions with opposite concavities. The pad has two internally protruding bands, each having a central opening and forming end seats with the transverse edges of the pad; and a longitudinal relief with grooved side walls and two transverse ribs. The play recovery element has elastically inclined flaps and further has the appendages inserted into the seats of the tray. The side walls of the longitudinal reliefs engage the curved portions, and the two transverse ribs of the pad abut the inclined elastic flaps of the play recovery element to prevent the tray from disengaging when inserted into the pad.

An armrest for office chairs includes a pad and a sleeve coupled to the chair structure. A tray, having longitudinal strips with seats at their ends, is integral with the sleeve and houses a play recovery element having externally protruding appendages, and the play recovery element has two central curved portions with opposite concavities. The pad has two internally protruding bands, each having a central opening and forming end seats with the transverse edges of the pad; and a longitudinal relief with grooved side walls and two transverse ribs. The play recovery element has elastically inclined flaps and further has the appendages inserted into the seats of the tray. The side walls of the longitudinal reliefs engage the curved portions, and the two transverse ribs of the pad abut the inclined elastic flaps of the play recovery element to prevent the tray from disengaging when inserted into the pad.

A device for moving the back and core muscles while sitting includes a rocking assembly that sits atop a base assembly, and optionally a height adjustment mechanism between the rocking assembly and the base assembly. The rocking assembly further includes a rocking mechanism that sits between a base plate or platform and a seat. The rocking mechanism can be, for example, a hollow or solid hemispheric- or dome-shaped rocking mechanism, an eccentric bicylinder rocking mechanism, and/or a rocking mechanism based on an arrangement of halfpipe members. The rocking mechanisms of the exercise chair allow to the seat to rock, wobble, and/or swivel with a side-to-side rocking motion, a front-to-back rocking motion, or both a side-to-side rocking motion and a front-to-back rocking motion.