F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/142
F04B 47/02 (2006.01) E21B 17/00 (2006.01) E21B 17/04 (2006.01)
Patent
CA 1197412
ABSTRACT OF THE DISCLOSURE The present invention relates to sucker rods and pony rods for use in a well. Conventional sucker or pony rods are formed from a single length of rod the ends of which are upset forged, machined, heat treated and cold rolled in order to provide a respective coupling at each end of the rod. The present invention provides many advantages compared with the conventional sucker rods by fabricating the sucker rod from discrete components which are friction forged together. The sucker rod is formed of an elgonate central member having a respective coupling component friction forged to each end thereof. The couplings may comprise a male com- ponent and a female component. The coupling components are each provided with a shank which can be held in the chuck of a friction forging device. The shanks are shaped so as to enable raised lettering to be provided on the shank without the lettering degrading the alignment of the component in the chuck. The central member may be formed from a different material to the coupling components.
409901
Drillcon Industries Limited
Marks & Clerk
LandOfFree
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