Patent ID: 9322238
Filing Date: 2016-04-26
CPC Classification: E21B,Y10T

Claim Text:
1. A polished rod lock out clamp for use in an oil well installation, comprising: a housing having a bore for receiving a polished rod in spaced relation therethrough; clamp members in said housing for grippingly and frictionally engaging said polished rod in said bore, each said clamp member having a hard inner end and a concavely curved recess in said inner end for receiving and grippingly engaging said polished rod in non-elastomeric frictional contact along at least a portion of a length of said recess to suspend said polished rod in said oil well installation; and manipulating means secured to said housing and said clamp members for moving said clamp members between a polished rod gripping position in which said clamp members grippingly engage said polished rod to prevent rotation or axial movement thereof, and a retracted position in which said clamp members are removed from said polished rod to permit rotational and axial movement of said polished rod in said bore of said housing.