Joints and connections – Molded joint – And independent connection
Patent
1984-09-17
1986-04-29
Callaghan, Thomas F.
Joints and connections
Molded joint
And independent connection
403265, 403268, 403365, 403343, 166 68, F16B 1100
Patent
active
045853681
ABSTRACT:
A sucker rod assembly useful in oil wells and the like is provided. In making the assembly, a longitudinally extending generally central cavity in a sucker rod end casing is coated with a mold release agent and the cavity interior surface includes longitudinally spaced inwardly directed annular wedges disposed transversely of the casing to provide a wave-like form. A plurality of separate rigid inserts are inserted longitudinally into the cavity and extend substantially the length of the plurality of wedges, collectively mating with the interior surface of the casing, and defining a central longitudinal space. An adhesive such as epoxy resin is poured into the central space and then a sucker rod end is inserted in that space. Thereafter the inserts are longitudinally biased relative to the casing to cause the wedges to force the inserts tightly against the outer surface of the sucker rod end until the adhesive sets in a strong thin bond layer to permanently secure the inserts to the sucker rod end and to bond the inserts together. The described fittings are secured at opposite ends of the sucker rod to firmly hold it without crushing it.
REFERENCES:
patent: 4205926 (1980-06-01), Carlson
patent: 4360288 (1982-11-01), Ruttledge, Jr. et al.
patent: 4401396 (1983-08-01), McKay
patent: 4430018 (1984-02-01), Fischer
patent: 4433933 (1984-02-01), Parsons, Jr. et al.
patent: 4475839 (1981-10-01), Strandberg
patent: 4494890 (1985-06-01), Lusk
patent: 4522529 (1985-06-01), Conley
Callaghan Thomas F.
Fischetti Joseph A.
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