Joints and connections – Molded joint – Socket or open cup for bonding material
Patent
1983-04-11
1984-02-07
Kundrat, Andrew V.
Joints and connections
Molded joint
Socket or open cup for bonding material
403374, F16B 1100
Patent
active
044300182
ABSTRACT:
An end fitting for a sucker rod for oil wells is described with the end fitting having a chamber portion extending inwardly from one end thereof and an externally threaded portion at its other end. The chamber portion is defined by a plurality of spaced-apart annular ridges which define frusto-conical shaped cavities therebetween. The end fitting also has a bore extending inwardly thereinto from its other end which communicates with the inner end of the chamber portion. A valve is mounted in the end fitting and has a valve stem positioned in the bore and a valve head positioned at the inner end of the chamber portion. The chamber portion is adapted to receive a glass reinforced resin bonded cylindrical rod which is maintained therein by a two-part epoxy resin which surrounds the rod and is received in the cavities to form epoxy wedges bonded to the rod. The outer end of the bore is provided with internal threads which threadably receive a screw therein which engages the end of the valve stem so that longitudinal force may be applied to the valve thereby transmitting longitudinal force to the end of the rod.
REFERENCES:
patent: 4205926 (1980-06-01), Carlson
patent: 4297787 (1981-11-01), Fischer
patent: 4315699 (1982-02-01), Lusk
patent: 4360288 (1982-11-01), Rutledge et al.
Kundrat Andrew V.
Technicraft, Inc.
LandOfFree
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