Pipe joints or couplings – Nonmetal to metal – Internal member
Patent
1992-03-09
1993-01-12
Reese, Randolph A.
Pipe joints or couplings
Nonmetal to metal
Internal member
285245, 285386, 2853344, F16L 3300
Patent
active
051784238
ABSTRACT:
A connector for a flexible pipe comprises a unitary sleeve having an end portion for coupling to a flexible pipe. The coupling end portion includes an annular threaded projection, a cylindrical portion adjacent the projection, and a frusto-conical portion adjacent the cylindrical portion, with the frusto-conical portion tapering from wide to narrow toward the pipe. The frusto-conical portion has its widest portion adjacent the cylindrical portion and has a diameter greater than the diameter of the cylindrical portion and forms a radially extending shoulder therewith for permitting a first end portion including an outer edge of the pipe that is slipped over the coupling end portion beyond the shoulder to bend radially inwardly toward the cylindrical portion, thereby securing the pipe to the sleeve against an axial force directed away from the sleeve. The frusto-conical portion has its narrowest portion with a diameter slightly less than the inside diameter of the pipe, thereby facilitating insertion of the frusto-conical portion into the pipe. A nut includes a threaded portion that cooperates with the threaded projection. The nut includes an inwardly radially projecting flange with a central cylindrical opening with an inside diameter substantially equal to the outside diameter of the pipe. The flange includes an inside edge that wedges a second end portion of the pipe against and is disposed directly above the frusto-conical portion for thereby sealing the pipe relative to the sleeve.
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Aberle Timothy
Reese Randolph A.
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