A furniture member rocker spring assembly includes first and second bracket members arranged in mirror image configuration. First and second springs are positioned between and in direct contact with each of the first and second bracket members. A restrictor bolt assembly is positioned intermediately between the first and second springs. The restrictor bolt assembly includes at least one sleeve member received in an aperture of the first and second bracket members and a fastener that extends through a sleeve bore in the sleeve member. The sleeve member is arranged in sliding contact with at least one of the first and second bracket members.

A mechanism and method for assembling a base to a piece of furniture is provided with at least two cam pieces having complimentary interlock mechanisms constructed and arranged to interlock one to another. A plurality of interlock mechanisms may be provided, as well as a plurality of positioning elements on respective cam pieces.

A mechanism and method for assembling a base to a piece of furniture is provided with at least two cam pieces having complimentary interlock mechanisms constructed and arranged to interlock one to another to form a cam. A plurality of interlock mechanisms may be provided, as well as a plurality of positioning elements on respective cam pieces.

A mechanism and method for assembling a base to a piece of furniture is provided with at least two cam pieces having complimentary interlock mechanisms constructed and arranged to interlock one to another to form a cam. A plurality of interlock mechanisms may be provided, as well as a plurality of positioning elements on respective cam pieces.

The chair can attain smooth movement of a seat by using a rolling surface. The chair includes an upper base unit (31) and a lower base unit (32) facing each other, and a seat (1) that is provided in the upper base unit (31) and swings when the upper base unit (31) rolls with respect to the lower base unit (32), and the upper base unit (31), which is at least one of the upper base unit (31) and the lower base unit (32), includes a rolling surface (312a) being curved. In the chair, a region having a different curvature exists in a part of the rolling surface (312a), and an elastic member (33) is interposed between the region having the different curvature and a corresponding region of an opposing surface.

A reciprocating rocking device for the rocking of a chair or cradle, the chair or cradle having rockers and a seat member, the reciprocating rocking device comprising a base secured to the rockers, the base comprising a first bracket, a second bracket secured to the seat member of the chair or cradle, a tension member connected to the second bracket, an eccentric, the eccentric constantly engaged with the second bracket and, a motor secured to the first bracket, the motor having a drive shaft operatively arranged to drive the eccentric, wherein the motor is coaxially arranged with the eccentric.

A reciprocating rocking device for the rocking of a chair or cradle, the chair or cradle having rockers and a seat member, the reciprocating rocking device comprising a base secured to the rockers, the base comprising a first bracket, a second bracket secured to the seat member of the chair or cradle, a tension member connected to the second bracket, an eccentric, the eccentric constantly engaged with the second bracket and, a motor secured to the first bracket, the motor having a drive shaft operatively arranged to drive the eccentric, wherein the motor is coaxially arranged with the eccentric.

An activating platform is disclosed. The platform includes a curved support plate. The support plate is divided into a standing area and a sitting area, the sitting area including a chair with a mounting arrangement and a seat. The curved shape of the support plate is meant to provoke the balance of a user standing or sitting on the platform, i.e. that the user has to use the muscles actively to hold the balance. Naturally, the user will rock around in a small angle around a middle position and flex in the hips and back to maintain the balance.

An activating platform is disclosed. The platform includes a curved support plate. The support plate is divided into a standing area and a sitting area, the sitting area including a chair with a mounting arrangement and a seat. The curved shape of the support plate is meant to provoke the balance of a user standing or sitting on the platform, i.e. that the user has to use the muscles actively to hold the balance. Naturally, the user will rock around in a small angle around a middle position and flex in the hips and back to maintain the balance.

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.