Patent ID: 9309729
Filing Date: 2016-04-12
CPC Classification: E21B

Claim Text:
1. A tool for clamping a saver sub assembly adapted for releasable connection with the drive shaft of a top drive drilling machine, the tool comprising: a tong arranged to hold the saver sub assembly fixed by releasable abutment against a portion of the saver sub assembly, wherein the tool is arranged on an upper portion of a frame which, in a position of use, is rotationally rigidly fixed to and projects from a support, the frame being provided with a through-going center opening arranged to receive a substantial portion of the saver sub assembly, wherein, in the position of use, the frame, extends through an opening in the support such that a lower portion of the frame extends beneath the support, wherein, in a longitudinal direction and remotely from the tong, a bottom abutment is positioned within the center opening in the lower portion of the frame, and configured for engaging and supporting a lowermost end of the saver sub assembly upon release thereof from the drive shaft.