Patent ID: 7487801
Filing Date: 2009-02-10
Classification: F16L

Abstract:
1. A self-venting cap and plug for use in sealing the end of a pipe or tube, said cap and plug comprising: a tubular member comprised of a resilient material having an open end and a closed end, and having an outermost sidewall extending therebetween; said outermost sidewall having an interior surface having an inwardly-directed ridge extending from said interior surface as well as continuously around the entire inner circumference of the tubular member along at least a centrally-disposed portion of said interior surface of said outermost sidewall and spaced from said closed end; said closed end comprising a centrally-positioned upwardly-extending hollow dome portion defined by a downwardly-extending open-ended annular recess in a topmost surface of said closed end, said annular recess also defining an inner sidewall spaced from and opposing said interior surface of said outermost sidewall of the tubular member with an upwardly-extending annular recess being formed therebetween, said inner sidewall containing at least one gas venting groove extending along the longtitudinal extent of said inner sidewall from an upper portion of said inner sidewall to a lowermost portion of said inner sidewall, said gas vent groove terminating along the longitudinal extent said inner sidewall, and said inner sidewall being spaced from said interior surface of said outermost sidewall of said tubular member a distance greater than the height of said inwardly-directed ridge.