Patent ID: 9273523
Filing Date: 2016-03-01
CPC Classification: E21B

Claim Text:
1. A tubular engagement apparatus comprising: a first member comprising a plurality of indentations disposed in a surface of the first member, each indentation comprising an inclined surface angled relative to a longitudinal axis of the first member; a second member concentrically disposed relative to the first member, the second member comprising a plurality of openings, wherein a respective length of each opening is substantially aligned with the longitudinal axis of the first member; and a plurality of non-spherical rolling supports, each support disposed within an indentation of the first member, and each support corresponding to an opening in the second member, wherein each non-spherical rolling support comprises an outermost surface configured to engage the inclined surface of the indentation of the first member, and a central spindle extending from either side of the support perpendicular to the longitudinal axis of the first member, and wherein movement of the second member relative to the first member urges the rolling supports along the inclined surfaces of indentations of the first member.