Pipe joints or couplings – Connector for conduit housing electromagnetic line: – Having box and connector
Patent
1989-05-02
1990-01-16
Callaghan, Thomas F.
Pipe joints or couplings
Connector for conduit housing electromagnetic line:
Having box and connector
285177, 285179, 285322, 285369, 285383, 285901, F16L 2106
Patent
active
048938467
ABSTRACT:
Fittings for cylindrical members such as pipes, tubes, and rods. A nut main body has internal camming surfaces formed by threads on a bore or recess inner surface, and a cap bolt has a through bore, and a longitudinally segmented shank defining clamping legs. External camming surfaces defined by threads on the remote ends of the clamping legs from the bolt head fit within the internal camming surfaces with the bolt head engaging the nut main body so that the internal and external camming surfaces are contained within the nut main body and protected against damage. A cylindrical member fits through the cap bolt bore and into the nut main body recess axially beyond the internal camming surfaces. Further tightening of the cap bolt causes camming action of the camming surfaces to occur, forcing the clamping legs to bend in cantilever fashion so that their remote ends clampingly grip the cylindrical member. Suitable seals are provided to keep the camming surfaces protected. Stop means in the nut main body may locate the cylindrical member end. The fitting may be axially extending or angularly formed, may clamp cylindrical members at both nut main body ends to join two such members together, or may have a pipe thread at one end opposite one cap bolt. Modifications may include tees, elbows, and X-shaped main bodies. Differently sized cylindrical members may be joined. In all arrangements the camming surfaces are so contained as to be protected against physical damage and contamination during handling, transport, and in use.
REFERENCES:
patent: 1370289 (1921-03-01), Crippen
patent: 1606188 (1926-11-01), Selah
patent: 1814481 (1931-07-01), Metcalf Jr. et al.
patent: 2755110 (1956-07-01), Jacobs
patent: 2761702 (1956-09-01), Noel
patent: 3552781 (1971-01-01), Helland
patent: 4335908 (1982-06-01), Burge
patent: 4653781 (1987-03-01), Sheets et al.
patent: 4805932 (1989-02-01), Imhof et al.
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