Patent ID: 8074712
Filing Date: 2011-12-13
Classification: E21B

Abstract:
1. A clamping assembly for use in a downhole tool comprising: an annular wedge ring engagable with the tool and circumscribing a portion of the tool; an outer radial surface on the wedge ring having a raised mid portion that defines a ridge and that is profiled radially inward at an angle B from the mid portion to opposing lateral ends of the wedge ring thereby providing a triangular shaped cross section in the wedge ring; and an annular stop ring circumscribing a portion of the tool adjacent the wedge ring and having a bevel on an inner surface of the stop ring that projects radially outward at an angle C along a lateral end of the stop ring and adjacent the wedge ring, so that when a base mount of an attachment to the downhole tool is axially urged against the bevel on the annular stop ring axially slides along the outer radial surface on the wedge ring towards the ridge to compressively couple the wedge ring to the downhole tool.