High torque rotatable progressive cavity drive rods and...

Details High torque rotatable progressive cavity drive rods and... High torque rotatable progressive cavity drive rods and...

F - Mech Eng,Light,Heat,Weapons

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F04C 15/00 (2006.01) E21B 17/00 (2006.01) F01C 1/107 (2006.01) F04C 2/107 (2006.01) F04C 13/00 (2006.01)

Patent

CA 2422348

A drive rod has pins on each end of its body. Each pin has tapered threading and little or no undercut thereby enhancing its ability to transfer rotational motion through the drive rod string by increasing the surface area through which torque is transferred. The tapering of the threading on the pins allows for connectors having thicker walls. This means the connectors can withstand higher rotational stress. The drive rods and connectors are especially well suited for use with progressive pumps.

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