Abstract: An independent friction joint structure including: at least one plug part having a connection to a device, the device comprising a lamp head; at least one joint part holding the at least one plug part in place, the at least one joint part having at least one holding structure; at least one side part having the ability to generate frictional rotational resistance to keep the at least one plug part in a predetermined position; at least one electrical contact between the at least one side part and the at least one holding structure of the at least one joint part; and at least one screw to fit all the components of the independent friction joint structure together.

Abstract: A roller skate device, including: at least one skate wheel. A cradle including a control wire. And a lever system coupled to the control wire, the lever system including at least one brake wheel that applies a braking force to the at least one skate wheel based on the motion of the cradle translated through the control wire.

Abstract: The lamp has a superior, sleek, aesthetic profile, while also providing robust functionality and articulation. The lamp includes at least one joint that combines the functionality of allowing an arm of the lamp to articulate and rotate, as well as allowing the joint to be pulled apart and plugged back together. Each articulating hinged or pivoting joint transmits electrical power between the adjoining members without the use of exposed wiring. There are a variety of structural options regarding the lamps base or attachment mechanism, including a weighted base, a clamp, a through-table mount, or a wall mount. Available versions of this sleek lamp include a variety of arm and joint configurations so that the lamp can serve a wide range of installations and applications, while using a standardized group of components.