Abstract: A socket for an electric light is provided including a first electric supply circuit, a second electric supply circuit, and a safety device adapted to detect presence or absence of a light bulb in the socket.

Abstract: A protective device designed to protect, from dirt and grind, a bottle held in a holder or cage fixed to a portion of a bicycle frame. The device comprises a cylindrical casing able to cover laterally, at least a top end of the bottle, and having a closed casing position and an open casing position; a lid which is able to close a top end of the cylindrical casing, and comprising a pivoting device permitting an opening of the lid from a closed lid position, when the cylindrical casing is in the closed casing position, to an open lid position; a sliding device disposable between the cage and the cycle; and wherein the cylindrical casing is able to have a sliding movement longitudinally along the sliding device, from the closed casing position where the top end of the bottle is protected to the open casing position thus giving access to the top end of the bottle.