Cleanout fitting

Claim 1

A cleanout fitting comprising: an elongated pipe being of one piece synthetic plastic construction and being generally cylindrically shaped and hollow throughout its entire length, said pipe having a cylindrical lower pipe section with a generally cylindrical internal surface, the internal diameter of the lower pipe section being substantially uniform throughout, a cylindrical intermediate pipe section with a generally cylindrical internal surface integrally connected with said lower pipe section along the entire top edge of said lower pipe section, the internal diameter of the cylindrical intermediate pipe section being substantially uniform throughout, a cylindrical upper pipe section with a generally cylindrical internal surface integrally connected with said intermediate pipe section along the entire top edge of said intermediate pipe section, the internal diameter of the upper pipe section being substantially uniform throughout, said intermediate pipe section having a plurality of internal threads, the internal cylindrical surfaces of said lower pipe section, said intermediate pipe section and said upper pipe section forming a continuous internal surface which is free of any structure attached to and disposed radially inwardly of the internal cylindrical surfaces of said lower pipe section, said intermediate pipe section and said upper pipe section, said intermediate pipe section being larger in internal diameter than said lower pipe section and said upper pipe section being larger in internal diameter than said intermediate pipe section; a plug member having a plurality of external threads engaged with said plurality of internal threads; means facilitating the rotation of said plug member; a cover plate seated against an upper portion of said pipe section; and means for retaining said cover plate relative to said pipe section including connection means for selectively connecting said cover plate to said plug member.