A chair is provided having at least one leg with an upper end on which a seat component is supported and a backrest interconnected to and projecting from the seat component. The backrest comprises a lower backrest section, an upper backrest section, and a backrest hinge interconnecting the upper backrest section to an upper end of the lower backrest section. The lower backrest section is interconnected to and extends from a rear portion of the seat component and the backrest hinge is configured to permit the upper backrest section to be located in an upright position in which the upper backrest section projects above the lower backrest section and is configured to permit the upper backrest section to be pivoted to a forward position in which the upper backrest section extends laterally over and spaced above the seat component.

The invention relates to a method to assist with using a pendula seating device, said device comprising a spherical foot, a seating portion, a body being secured at a first end to said foot and at a second end to the seating portion and a position-measurement sensor being secured to said device. The invention also relates to a remote electronic object carrying out said method by the processing unit thereof, the remote electronic object also comprising output means and means ensuring communication with said seating device. Said electrical object also comprises a memory of programs comprising instructions of a computer program product the execution or interpretation of which by the processing unit causes the implementation of the assistance method.

A seating device includes a base and a seat post extending from the base. The seat post has a first end adjacent the base, a second end opposite the first end, and a longitudinal axis extending between the first end and the second end. The seating device further includes a seat supported by the seat post above the base and a first rocking assembly coupled to the base and the first end of the seat post. The first rocking assembly is operable to angularly displace the seat post relative to the base. The seating device further includes a second rocking assembly coupled to the seat and the second end of the seat post. The second rocking assembly is operable to angularly displace the seat relative to the seat post.

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 portable seat apparatus including a support seat having a support seat body sized to support a user's back, the support seat body having a first end and a second end opposite the first end, the second end sized to terminate a distance above a user's hamstrings, at least one strap coupled to the support seat body and configured to surround a user's body part, and a support assembly including a base couplable to a ground surface and a height adjustable support column having a proximal end opposite a distal end, the proximal end coupled to the support seat and the distal end rotatably coupled to the base such that the proximal end of the support column is rotatable toward and away from the base.

A control unit for a wearable sitting posture assisting device, having at least one operation program, which is designed to control a blocking means of at least one leg unit of the wearable sitting posture assisting device in dependence of a sensor signal representing a sitting angle between an upper support and a lower support of the at least one leg unit, to a wearable sitting posture assisting device with such a control unit and a method for controlling a wearable sitting posture assisting device.

A chairless chair exoskeleton in order to provide seating support to the user while the user is standing particularly in industrial field includes at least one foot connection element for being connected to the foot of the user and at least one calf support element connected to said foot connection element, and at least one thigh support element connected to said calf support element by means of at least one joint and at least one energy storage element associated to the thigh support element from one side and associated to the calf support element from the other side.

An adjustable seating solution that enables users to adjust several seating characteristics is disclosed. In a relatively low sitting position, the disclosed device provides some support if the user leans back, but predominately supports the user's weight and requires the user to engage core muscles to maintain good posture. The disclosed apparatus enables the user to adjust the seat upward to a leaning position. A platform extends forward under the user's feet to ensure that when the user leans against the seat, the apparatus remains stable. The apparatus enables the seat portion to be tilted, such that varying contours can be selected to engage the user's body in a desired way. At low heights, the user can tilt the seat portion forward to require the user to further engage core muscles while seated. At higher heights, the user can customize the contour of the seat that engages the user's body.

A seat that can move between an upright position and one or more active positions is provided. The seat can have a base with a non-planar portion to wobble the seat into one or more wobble orientations, thereby permitting controlled pitching of the seat relative to a floor surface. The base can have one or more roll reduction pads to restrict roll in or about a roll axis perpendicular to a pitch axis about which the seat pitches. The seat can also have a post coupled to the base and a seat pan to provide a seating surface. The base can be weighted and can have a non-planar portion to wobble the seat into one or more wobble orientations. The roll reduction pads can extend radially outwardly from the apex of the non-planar portion. One or more pads can generally conform to contours of the non-planar portion of the base.

A plank stand, comprising: abase; a first leg shaft connected, on a first end thereof, with the base; and at least one first leg support connected with a second end of the first leg shaft; wherein the plank stand is configured to enable a user to stand on the base and lean on the at least one first leg support.