US Patent 11746821 Flat roof mounting device

A mounting device for covering a roof penetration in a roof includes a base having a hub, an outer perimeter structure, an open top, an open bottom, and ribs extending from the hub outward to the outer perimeter structure. An internal reservoir in communication with the open top and the open bottom. At least one of the ribs is formed with a bore for receiving a fastener for fastening the mounting device at the roof penetration.