Patent ID: 7849929
Filing Date: 2010-12-14
Classification: E21B

Abstract:
1. A drill rod spinner device, comprising: a mount; a first base half having a first end and a second end, wherein the first base half at the first end is rotatably coupled to the mount; a first clamping roller operatively associated with the second end of the first base half; a second base half having a first end and a second end, wherein the second base half at the first end is coupled to the mount; a second clamping roller operatively associated with the second end of the second base half; a rotary actuator assembly secured to the mount; a flexible belt operatively associated with the rotary actuator assembly, the flexible belt having a first surface and an opposing second surface, wherein the first surface engages engaging the first clamping roller and the second clamping roller; and an idler roller assembly comprising first and second idler rollers configured to translate relative to at least one of the first base half and the second base half to maintain engagement between the flexible belt and the rotary actuator as the first base half is rotated relative to the mount, wherein the second surface of the flexible belt engages the first and second idler rollers, and wherein the first and second idler rollers are capable of movement toward or away from each other during use of the drill rod spinner device.