Patent ID: 6681796
Filing Date: 2004-01-27
Classification: F16L,Y10T

Abstract:
A drainage valve tap assembly comprising:a hollow body having a first end and a second end; a cutting tube attached to the first end of the body; at least one cutting tooth located on the cutting tube distal to the hollow body for cutting the sidewall of a pipe; a water inlet located on the cutting tube for receiving water, a first screen located between the cutting tooth and the second end of the body, the screen having multiple openings sufficiently small to prevent the flow of dirt and other contaminants from flowing therethrough but sufficiently large to permit the flow of water therethrough; a handle having a hollow interior, the handle attached to the second end of the body for rotating the body; and a resilient drain plug extending at least partially in the body between said first screen and the second end for blocking off the flow of water under a water pressure through the body and against the drain plug and for allowing the draining of water through the body and out the second end when the water pressure is cut-off thereby allowing the drain plug to open.