Luminaire connection systems

A system for connecting luminaires, the system comprising:

• a. a first luminaire comprising a receiving portion angled proximally upward and comprising a catch;
• b. a second luminaire comprising an arm moveable between a raised position and a lowered position, the arm comprising a bearing portion angled distally upward, the bearing portion comprising a threaded opening;
• c. a first threaded fastener comprising a head and a threaded shank for threading engagement with the threaded opening of the second luminaire, the head having a diameter greater than a width of the catch of the first luminaire, and the threaded shank having a diameter smaller than the width of the catch of the first luminaire;
• wherein in an initial position when the first luminaire and the second luminaire are aligned and separated by an initial distance, the catch of the first luminaire and the threaded opening of the second luminaire are alignable, the arm of the second luminaire is positionable in the lowered position, and the first threaded fastener is engageable with the threaded opening of the second luminaire in an untightened position,
• wherein in intermediate positions when the first luminaire and the second luminaire are aligned and separated by intermediate distances progressively shorter than the initial distance, the arm of the second luminaire is raised from the lowered position to the raised position as the head of the first threaded fastener abuts a distal face of the receiving portion of the first luminaire and slides diagonally upward the catch of the first luminaire, and subsequently the arm of the second luminaire is lowered from the raised position to the lowered position by gravity after the head of the first threaded fastener slides over a top edge of the catch of the first luminaire,
• wherein in a final position when the first luminaire and the second luminaire are aligned and in contact, the proximal angling of the receiving portion of the first luminaire corresponds to the distal angling of the bearing portion of the arm of the second luminaire whereby the arm of the second luminaire bears flatly against the receiving portion of the first luminaire, and the first threaded fastener is engageable with the threaded opening of the second luminaire in a tightened position, with the receiving portion of the first luminaire clamped between the head of the first threaded fastener and the bearing portion of the arm of the second luminaire, to tighten connection between the first luminaire and the second luminaire.