Patent ID: 9541073
Date: 2017-01-10
CPC Classifications: E21B,F04B,F16D,F16H

Claim:
1. A rotator mechanism for rotating an elongate member in a pumping system, the rotator mechanism comprising: a body member having a longitudinal body axis and a through-hole aligned with the body axis and configured to receive a portion of the elongate member; a worm gear set coupled to the body member and including: a lever coupled to the worm, the lever configured to rotate the worm relative to the body member; a first clutch coupled between the lever and the worm first end and configured to cause the worm to rotate in a first direction about the worm axis when the lever moves in the first direction about the worm axis and configured to allow the lever to rotate freely relative to the worm when the lever moves in a second direction about the worm axis, opposite the first direction; and a second clutch coupled to the worm and configured to allow the worm to rotate in the first direction about the worm axis and to prevent the worm from rotating in the second direction about the worm axis; wherein the worm gear is configured to rotate the elongate member about the body axis when the worm rotates in the first direction about the worm axis; and wherein the first and second clutches each have a plurality of circumferentially-spaced sprags, each clutch configured to allow rotation of an outer race relative to an inner race in a first direction about the worm axis while preventing the rotation of the outer race relative to the inner race in the opposite direction wherein the inner race of the first clutch is coupled for rotation with the worm, and the outer race of the first clutch is coupled for rotation with the lever.