Coupler for connecting two plastic pipes and process and mold fo

Details Coupler for connecting two plastic pipes and process and mold fo Coupler for connecting two plastic pipes and process and mold fo

1992-09-04

1994-07-19

Reese, Randolph A.

Pipe joints or couplings

Molded joint

Having screw interlock

285345, 285369, 285915, F16L 4700

Patent

active

053302389

ABSTRACT:
The coupler consists of an essentially cylindrical outer layer of glass fiber-reinforced plastic and an inner layer consisting of polyurethane. This inner layer has, approximately in the middle between the two coupler ends, a rib which serves as a stop for the ends of the two pipes to be connected to one another. The coupler has, between this rib and one coupler end (a), an approximately conical inner shape which has a diameter which increases in an outward direction, this conical surface also being provided with two sealing beads. A cylindrical section, a sawtooth-like rib and an annular groove are present between the other coupler end and the rib, A coupler of this type can be mounted relatively simply on the end of a pipe and can be nondetachably connected to it also by means of an adhesive, A pipe of essentially the same diameter can be inserted into the other coupler end and gives a tight fit in the coupler even when the axes of the coupler and the pipe do not coincide but make a small angle with one another.

REFERENCES:
patent: 2302244 (1942-11-01), Morrell
patent: 2794483 (1957-06-01), Hopkins et al.
patent: 3430989 (1969-03-01), Wendt
patent: 3575445 (1971-04-01), French
patent: 4174125 (1979-11-01), Wyss
patent: 4229028 (1980-10-01), Gray
patent: 4371179 (1983-02-01), Bohman
patent: 4400019 (1983-08-01), Fruck
patent: 4565381 (1986-01-01), Joelson
patent: 4915422 (1990-04-01), Chacon et al.
patent: 5186197 (1993-01-01), Thompson, Jr.

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