To provide a press type pipe joint for use in a double-layer pipe formed by applying a resin coating on the outer surface of a thin small bore diameter metallic pipe, facilitating connection, securing sealing ability, and having high-grade pull-out resistance.
An inner cylinder part 6 having an outside diameter to which the double-layer pipe 5 formed by applying the resin coating 4 to the outer surface of the thin metallic pipe 3 is externally fitted through a step part 2 is projected on the joint body 1, a suitable number of grooves 7 are provided in a suitable part of the inner cylinder part 5, a sealing material 8 is mounted on each of the grooves 7, and a several angled rugged part 9 having a gentle curved surface is connected to the outer surface of the inner cylinder part 6 closer to the step part 2. At the back of the step part 2 of the joint body 1, a ring 11, the side of which is provided with a window part 10 for observing insertion of the double-layer pipe 3, is locked to freely rotate, and an outer cylinder part 12 externally fitted to the double-layer pipe 5 is held on the inner surface of the ring 11.
YOSHIDA YUTAKA
KINOSHITA TAKAAKI
| JP2001027375A | 2001-01-30 | |||
| JPH01127124A | 1989-05-19 | |||
| JPS55122584U | 1980-08-30 | |||
| JP2001295974A | 2001-10-26 |