A rotating work surface system for a chair including a seat base having a top engaging surface, a seat support having top side and a bottom side and a rotating surface positioned in between the seat base and the seat support. The rotating surface includes a top side and a bottom side wherein the rotating surface is adapted to pivotally engage about an axis and a fixed position of the seat base and the seat support.

A rotating work surface system for a chair including a seat base having a top engaging surface, a seat support having top side and a bottom side and a rotating surface positioned in between the seat base and the seat support. The rotating surface includes a top side and a bottom side wherein the rotating surface is adapted to pivotally engage about an axis and a fixed position of the seat base and the seat support.

A sofa shelf includes a main body, a support member, a first clamping member, and a second clamping member. The main body is provided with a first surface and a second surface opposite to the first surface. The main body is further provided with a receiving groove located on the first surface. The support member is disposed on the first surface and is movably connected to the main body. The support member is provided with a placing groove arranged obliquely relative to the horizontal plane. Both the first clamping member and the second clamping member are disposed on the second surface. The first clamping member and the second clamping member are rotatably connected to the main body, respectively. Rotation directions of the first clamping member and the second clamping member are opposite.

A modular attachment system may be provided with the ability to rapidly interchange different peripherals and accessories at different points where modular receivers have been installed. One or more modular receivers may include one or more quick-connect receptacles adapted to receive corresponding one or more quick connectors of one or more peripheral adapters to quickly connect and disconnect the modular peripheral adapters to facilitate rapid reconfiguration of chairs, desks, tables, or other furniture for different applications. A variety of peripherals and accessories can be attached to one or more modular peripheral adapters to create peripheral assemblies that can be rapidly interchanged by rapid connection to or disconnection from any installed modular housings to reconfigure furniture for different applications. The modular receivers may be attached to a desk, table, or other furnishings or manufactured as a part of office, computer, or gaming chairs, desks, tables, or other furnishings.

A method and apparatus include attaching a lighted cup holder to a seating arrangement. The lighted cup holder includes a cup holder body and a light-producing light source, with the cup holder body being attached to the seating arrangement and having a cup receptacle therein, the light-producing source being disposed within the cup receptacle for illuminating the receptacle. A light-sensitive element operatively connected to the light source selectively controls production of light by the light source in such a manner that illumination of the cup holder is provided only under conditions where visibility is reduced to the point that it becomes difficult to locate the cup holder. The light-sensitive element is mounted on a master lighted cup holder and controls illumination of the master lighted cup holder and one or more slave lighted cup holders operatively connected to the master lighted cup holder.

A method and apparatus include attaching a lighted cup holder to a seating arrangement. The lighted cup holder includes a cup holder body and a light-producing light source, with the cup holder body being attached to the seating arrangement and having a cup receptacle therein, the light-producing source being disposed within the cup receptacle for illuminating the receptacle. A light-sensitive element operatively connected to the light source selectively controls production of light by the light source in such a manner that illumination of the cup holder is provided only under conditions where visibility is reduced to the point that it becomes difficult to locate the cup holder. The light-sensitive element is mounted on a master lighted cup holder and controls illumination of the master lighted cup holder and one or more slave lighted cup holders operatively connected to the master lighted cup holder.

A modular attachment system may be provided with the ability to rapidly interchange different peripherals and accessories at different points where modular receivers have been installed. One or more modular receivers may include one or more quick-connect receptacles adapted to receive corresponding one or more quick connectors of one or more peripheral adapters to quickly connect and disconnect the modular peripheral adapters to facilitate rapid reconfiguration of chairs, desks, tables, or other furniture for different applications. A variety of peripherals and accessories can be attached to one or more modular peripheral adapters to create peripheral assemblies that can be rapidly interchanged by rapid connection to or disconnection from any installed modular housings to reconfigure furniture for different applications. The modular receivers may be attached to a desk, table, or other furnishings or manufactured as a part of office, computer, or gaming chairs, desks, tables, or other furnishings.

A chair assembly includes a seat with a top side and a bottom side. The seat is connected to a telescoping arm that has a first end and a second end. The first end of the arm is connected to the bottom side of the seat. A platform having a top side and a bottom side is attached to the second end of the arm. The height of the platform is adjustable via the telescoping arm.

A sliding stop switch may include a first rod extending in the longitudinal direction thereof, a second rod coupled to the first rod such that one end portion thereof is slidable in the longitudinal direction of the first rod, and a switch member coupled to the first rod to slide in the longitudinal direction of the first rod and to be fixed at a plurality of points on the first rod to stop the sliding of one end portion of the second rod.

A stool and desk support system. The system includes a stool base and a desk support surface. A support member may connect the desk support surface to the stool base and support the desk support surface above a floor surface. The stool base may include a stool seat surface and a rocking mechanism opposite the stool seat surface. The desk support surface may be connected to a desk support base by a neck extending from the desk support base. The stool base may include an upper stool base frame and a lower stool base frame. The upper stool base frame may be height adjustable with respect to the lower stool base frame. The desk support base may connect to the upper stool base frame, permitting coinciding height adjustment of the desk support surface and the upper stool base frame.