Porthole assembly for a swimming pool wall

Abstract From the Canadian patent

The disclosure herein describes a porthole assembly adapted to be mounted in registry with an opening in a swimming-pool wall; the assembly comprises a lamp unit holder ring mounted to the outer face of the wall and a transparent cover plate disposed on the inner face of the swimming pool wall. The elements which secure the holder ring and the cover plate to the wall have tool-engaging ends accessible from outside the pool; their opposite ends are received in a water-tight arrangement on the cover plate so as to avoid all contact with the water of the pool. The engagement of the lamp unit to the holder ring is such that the light emitted is directed towards the bottom of the pool. The …