A chair base is revealed. A round bulge is formed on a center of a bottom surface of a bottom plate and a limit portion is gradually flattened from the round bulge toward a periphery of the bottom plate. A base body is disposed on a top surface of the bottom plate while a cover is used for covering the base body therein and enclosing the periphery of the bottom plate. Thereby the bottom plate, the base body, and the cover are connected and fixed by one another. While in use, users rock the chair by the round bulge on the bottom plate in response to their shifts in center of gravity. A rock angle of the chair is limited by the limit portion. Thereby the users will not tip the chair over while rocking the chair violently and safety in use is ensured.

An article of footwear includes a tubular knit upper and an outsole. Further, a thermoplastic polyurethane skin layer is disposed between the tubular knit upper and the outsole. The outsole comprises a plurality of regions intended to support and stabilize a foot of a user when the user sits in various sedentary positions.

A wobble base provides a curved floor-contacting surface with one or more alignment posts that align the wobble base to the bottom of a seating platform and one or more holes separate from the alignment posts through which one or more fasteners may be placed to attach the wobble base to the seating platform, thereby providing a wobble stool. The wobble base can be configured to convert an existing stool into a wobble stool by replacing one or more floor-contacting members with the wobble base. In a second embodiment, a seating platform, such as a stool, is provided with both traditional floor-contacting members, such as feet or casters, and with a wobble base that allows the traditional floor-contacting members to be removed and replaced with the wobble base, and allows the wobble base to be removed and replaced with the traditional floor-contacting members.

A wobble base provides a curved floor-contacting surface with one or more alignment posts that align the wobble base to the bottom of a seating platform and one or more holes separate from the alignment posts through which one or more fasteners may be placed to attach the wobble base to the seating platform, thereby providing a wobble stool. The wobble base can be configured to convert an existing stool into a wobble stool by replacing one or more floor-contacting members with the wobble base. In a second embodiment, a seating platform, such as a stool, is provided with both traditional floor-contacting members, such as feet or casters, and with a wobble base that allows the traditional floor-contacting members to be removed and replaced with the wobble base, and allows the wobble base to be removed and replaced with the traditional floor-contacting members.

The present disclosure provides a highly steady rotary chair, and relates to the technical field of rotary chairs, which solves the technical problems that in the rotary chair in the prior art, a fully-welded base plate causes a product to have an extremely large packaging volume and higher production and sales cost. The highly steady rotary chair includes a rotary chair body and a rotary chair base. The rotary chair base includes a bottom ring, a supporting rod, a rotating shaft tray, a rotating shaft, a rotating shaft connector, and a chair seat connecting steel plate which are detachably connected in sequence from bottom to top; and the rotary chair body and the rotary chair base are detachably connected through the chair seat connecting steel plate. The present disclosure is used to provide the highly steady rotary chair with a detachable base plate and has the advantages of reducing the packaging cost and improving the product loading capacity.

The present disclosure provides a highly steady rotary chair, and relates to the technical field of rotary chairs, which solves the technical problems that in the rotary chair in the prior art, a fully-welded base plate causes a product to have an extremely large packaging volume and higher production and sales cost. The highly steady rotary chair includes a rotary chair body and a rotary chair base. The rotary chair base includes a bottom ring, a supporting rod, a rotating shaft tray, a rotating shaft, a rotating shaft connector, and a chair seat connecting steel plate which are detachably connected in sequence from bottom to top; and the rotary chair body and the rotary chair base are detachably connected through the chair seat connecting steel plate. The present disclosure is used to provide the highly steady rotary chair with a detachable base plate and has the advantages of reducing the packaging cost and improving the product loading capacity.

A chair with a curvilinear frame includes two vertically aligned curvilinear tubular side frame members facing each other, a horizontally aligned seat attached to each side frame members by two screws inserted through side member screw hole in each side member and into seat screw holes said seat's right side and left side, and a generally vertically aligned back attached to each side frame members by two screws inserted through side member screw hole in each side member and into back screw holes said back's right side and left side.

The present invention relates to a physiotherapeutic rocking chair device that is primarily comprised of a seating area, a main frame assembly on each side of the seating area, and a seating area frame assembly. The main frame assembly is comprised of at least one skid plate member that has a convex bottom edge that allows the device to easily rock back and forth. The seating area frame assembly is further comprised of a footrest that a user can press against to rock the device back and forth. In this manner, the device can be used to strength and/or rehabilitate the lower body/legs of a user. The seating area and seating area frame assembly and further be positioned such that they are parallel to a ground surface in order to allow a non-ambulant user to be easily transferred on to the device.

The present invention relates to a physiotherapeutic rocking chair device that is primarily comprised of a seating area, a main frame assembly on each side of the seating area, and a seating area frame assembly. The main frame assembly is comprised of at least one skid plate member that has a convex bottom edge that allows the device to easily rock back and forth. The seating area frame assembly is further comprised of a footrest that a user can press against to rock the device back and forth. In this manner, the device can be used to strength and/or rehabilitate the lower body/legs of a user. The seating area and seating area frame assembly and further be positioned such that they are parallel to a ground surface in order to allow a non-ambulant user to be easily transferred on to the device.

A spring actuated rocking mechanism can be attached to the legs of a collapsible chair to allow for the user to rock in the collapsible chair. The mechanism may be attached at the factory or retrofitted to the chair. The rocking mechanism can be attached to the end of a leg or disposed within a leg, having a leg portion above and below the mechanism.