Pipe joints or couplings – Molded joint – Solder
Patent
1994-11-02
1995-12-26
Nicholson, Eric K.
Pipe joints or couplings
Molded joint
Solder
285297, 285903, 285294, 285295, F16L 1311
Patent
active
054781230
ABSTRACT:
A pipe joint for connecting a corrugated spiral pipe includes an annular projection formed on the axially central portion, a spiral projection bonded on a portion on one side of this projection so as to engage with the spiral pipe, compressible and transformable ring-like sealing bodies bonded on the inner circumferential surfaces on the both sides of the spiral projection, and a small hole for injecting a hardening liquid agent and formed in a portion between the sealing bodies so as to penetrate the portion. A corrugated spiral pipe provided with a joint has the above mentioned joint fitted onto a pipe end of the spiral pipe, and is produced by filling a space portion between the ring-like sealing bodies with a hardened matter of a hardening liquid agent, so that the joint is water-tightly coupled with the pipe end of the spiral pipe. Further, in a method of connecting another spiral pipe with such a corrugated spiral pipe provided with such a joint, a block-like water sealing material is pressed into a valley portion of a pipe end of another spiral pipe, an elastic seal ring having a plurality of annular corrugations on the outer circumferential surface is fitted onto the upper surface of the water sealing material, and thereafter the pipe end is pressed into a tip end projecting portion of the joint body.
REFERENCES:
patent: 245263 (1881-08-01), Robb
patent: 526097 (1894-09-01), Anderson
patent: 836173 (1906-11-01), Barnstead
patent: 3606401 (1971-09-01), Schwarz
patent: 3916502 (1975-11-01), Bagnulo
patent: 4226444 (1980-10-01), Bunyan
patent: 5415440 (1995-05-01), Kanao
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