Drive assembly for a reciprocating pump utilizing a linear...

Details Drive assembly for a reciprocating pump utilizing a linear... Drive assembly for a reciprocating pump utilizing a linear...

2006-06-05

2011-12-27

Leslie, Michael (Department: 3745)

Power plants

Pressure fluid source and motor

Cyclically operable reciprocating or oscillating motor or...

Reexamination Certificate

active

08082734

ABSTRACT:
A drive assembly for a reciprocating pump includes a support structure with a linear actuator mounted on the support structure. The linear actuator has a stationary portion and a movable ram portion. At least one direction altering cable guide is mounted to the movable ram portion of the linear actuator. At least one cable is provided having a first end and a second end. The first end is anchored to one of the support structure or the stationary portion of the linear actuator. The second end is adapted for attachment to a polish rod of a reciprocating pump. As the movable ram portion moves, the cable and cable guide configuration provide a mechanical advantage which results in the polish rod reciprocally moving a multiple of the distance travelled by the movable ram portion of the linear actuator.

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