Patent ID: 6364370
Filing Date: 2002-04-02
Classification: F16L

Abstract:
A pipe joint characterized in that in a tube having pipe inserting openings on opposite ends thereof so as to overlap on outer peripheral surfaces of ends of a pair of pipes to be joined together, inner peripheral portions of both half portions of the tube are formed with corresponding tapered surfaces gradually reduced in the inside diameter toward the openings, a wedge ring is charged into a large inside diameter portion of the tapered surface, the wedge ring being constituted in the form of an elastic wedge ring with a diameter reducing spilt groove in order to encroach on the outer peripheral surfaces of the pipes when the wedge ring moves toward a small inside diameter portion of the tapered surface, a sliding ring capable of smoothly sliding along the inner surface of the tube is provided adjacent to the wedge ring in the large inside diameter portion of the tapered surface, a sliding-preventing shoulder for preventing the sliding ring from sliding in a direction away from the wedge ring is formed in the inner peripheral direction of the tube, and a rubber ring capable of being placed in close contact with the outer peripheral surfaces of the pipes inserted from the openings is engaged with and held on the inner peripheral portion of the sliding ring.