Draft compensating coupling member

Details Draft compensating coupling member Draft compensating coupling member

1996-04-22

1998-01-20

Arola, Dave W.

Pipe joints or couplings

With fluid pressure seal

Flexible lip

285331, 285906, 285910, F16L 1706

Patent

active

057094110

ABSTRACT:
A coupling member includes a ring is formed with a predetermined draft angle. A gasket is provided for creating a seal between the ring and the end grooves of the conduit. The gasket comprises first and second walls which define an interior cavity for receiving the ring. The first and second walls have differential thicknesses so as to accommodate the draft angle of the ring. A plurality of fins are formed integrally on the exterior of the gasket for creating an interference fit with the end grooves.
In the preferred embodiment, the first wall is substantially thicker than the second wall and the fins exterior to the first wall are thicker than the fins on the second wall. Also, the thicknesses of the first and second walls are preferably tapered so as to define an interior cavity having a draft angle equal to that of the ring.

REFERENCES:
patent: Re9737 (1881-05-01), Whittemore
patent: Re33199 (1990-04-01), Karr, Jr.
patent: 52010 (1866-01-01), Aldrich
patent: 249594 (1881-11-01), Dietz
patent: 795976 (1905-08-01), Herrick
patent: 1940074 (1933-12-01), Burmeister
patent: 4116473 (1978-09-01), Creus
patent: 4202568 (1980-05-01), Strom
patent: 4400019 (1983-08-01), Fruck
patent: 4452462 (1984-06-01), Karr, Jr.
patent: 4819972 (1989-04-01), Champa et al.
patent: 5362112 (1994-11-01), Hamilton et al.

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