Patent ID: 8225694
Filing Date: 2012-07-24
Classification: F04B,Y10T

Abstract:
1. A piston rod assembly for coupling between a power end component and a fluid end component of a high pressure reciprocating pump, the assembly comprising, an upper clamping member and a lower clamping member each having a fluid end recess and a power end recess on an inner surface of each clamping member arranged along an axis of the components, wherein a portion of each component is gripped and held within each of the respective recesses wherein the clamping members are brought together by a tensioning device located orthogonal to the axis of the components, wherein the tensioning device comprises a stem adapted to receive a nut or a lock, wherein the tensioning device is engaged in a non-rotational arrangement within the lower clamping member and the stem extends through an aperture in the upper clamping member, wherein a nut engages the stem and the upper clamping member to provide tension in said tensioning device such that the clamping members are brought together by the tensioning device.