Patent ID: 7632401
Filing Date: 2009-12-15
Classification: E03F,Y02A

Abstract:
1. In a floor system providing a relatively flat waterproof floor surface for a person to safely stand on but sufficiently sloped to drain water and moisture toward and into a drain, the floor system including a clamping ring drain assembly configured to funnel water from the floor surface into an input opening of in-floor drain plumbing; the clamping ring drain assembly including a base ring configured for connection to the in-floor drain plumbing, an intermediate ring configured for connection to the base ring, an upper clamping ring configured for connection to the intermediate ring, and a cover for covering the input opening but that does not extend above the floor surface, an improvement comprising: the floor system including a waterproof membrane and mortar and tiles supported on and bonded to the waterproof membrane around the drain assembly that form the floor surface; the waterproof membrane having marginal material defining a hole, all of the marginal material being located outboard of an outer edge of the upper clamping ring when assembled, the input opening of the in-floor drain plumbing to the marginal material of the waterproof membrane defining a measurable vertical distance; and a first customized floor drain flasher adapter membrane having an outer first ring bonded to the marginal material of the waterproof membrane to define a double-thick area of bonded material extending around but located outboard of the upper clamping ring and having an inner second ring for positioning near the input opening to the drain plumbing and having a ring of frustoconically-shaped transition material connecting the first and second rings, the first and second rings being vertically spaced apart and having a dimension correlated to the measurable vertical distance; whereby when assembled, the waterproof membrane and the flasher adapter membrane combine to connect to the input opening of the drain plumbing of the floor system in a water-draining construction that does not leak and that reduces unnatural and uneven folding, bending or stretching of the membranes, hence substantially eliminating water leaks, puckering of the membranes, cracking of the membranes, and providing good durability and a longer-lasting installation of the floor system.