Joints and connections – With adjunctive protector – broken parts retainer – repair,... – Position or guide means
Patent
1981-02-23
1983-08-30
Kundrat, Andrew V.
Joints and connections
With adjunctive protector, broken parts retainer, repair,...
Position or guide means
403268, F16B 1100
Patent
active
044013965
ABSTRACT:
A fiberglass oil well sucker rod with a male threaded fitting bonded to each end of a fiberglass rod so that the fiberglass sucker rod may be threadedly connected through interconnecting female threaded couplings in a well string to other like rods of the same or different lengths and/or to a down-the-well pump and to well string drive and pump drive equipment at the top of the well. Fittings on ends of a fiberglass rod include an annular shoulder that holds a centering ring for the rod, four tapered pocket steps, and finally, a centering pocket beyond the innermost step.The taper of tapered pocket closest to the fitting opening is more shallow than the taper of the following tapered pockets with the minor diameter of each taper having a radiused entrance tangential to the angle of the taper of the pocket to relieve stress on the epoxy used bonded to the rod and filling space between the rod and the fitting. Rather than the assembly being completely bonded together a mold release agent is coated on the interior of each fitting and the epoxy bonded to the rod with the wedges formed thereof holding the rod ends within the opposite end fittings.
REFERENCES:
patent: 2212153 (1940-08-01), Eaton et al.
patent: 2322587 (1943-06-01), Payne
patent: 3018140 (1962-01-01), Portz et al.
patent: 4190479 (1980-02-01), Smith
patent: 4315699 (1982-02-01), Lusk
Kintzinger Warren H.
Kundrat Andrew V.
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