Electrical fixture mounting system

A device for mounting an electrical fixture to a supporting structure in a building, the device comprising:

• a base module and a cartridge module;
• wherein the base module comprises a cylindrical base socket, having a closed socket side and an open socket side and having a socket bottom interior to the closed socket side, and an open cubic or cuboidal base box, which encloses the closed socket side;
• wherein the cartridge module comprises a cylindrical cartridge plug, which extends from a distal face of a cuboidal cartridge mount;
• wherein the electrical fixture either incorporates the cartridge module or is mechanically attached to the cartridge module;
• wherein the electrical fixture is electrically connected to at least three spring-loaded pop-up electrical contacts embedded in a distal face of the cartridge plug;
• wherein the cartridge plug is conjugately insertable into the base socket, in which the cartridge plug is releasably secured by a spring-loaded twist-and-lock mechanism;
• wherein the base socket contains at least three concentric annular electrically conductive contact strips, which are electrically connected through the base box to at least three power wires from the building, and wherein the contact strips are configured to engage the pop-up electrical contacts when the cartridge plug is inserted into the base socket, thereby completing an electrical circuit between the power wires and the electrical fixture;
• wherein the cartridge plug, upon being inserted into the base socket, is rotatable through 360 degrees within the base socket, and wherein rotation of the cartridge plug within the base socket is controlled by a rotational adjustment mechanism comprising two spring-loaded rotational locking arms, which conjugately engage a rotation ring around an inner perimeter of the base socket;
• and
• wherein all the contact strips are continuous, without openings or gaps, and are embedded in the socket bottom, and wherein the contact strips are configured to continuously engage the pop-up electrical contacts through a full 360-degree rotation of the cartridge plug within the base socket.