SECTIONAL DRIVE SYSTEM

摘要

A sectional drive system for transmitting rotational power to an output, which system includes multiple splined drive segments which are nested and interlocked as a drive string that is rotatable in a selected straight or curved path. The top one of the drive segments cooperates with a drive mechanism to effect rotation of the nested drive segments in concert, and the bottom one of the drive segments connects to a suitable output such as a drill bit.