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Class Information
Number: 175/325.7
Name: Boring or penetrating the earth > With tool shaft detail > Shaft carried guide or protector > Surrounding existing shaft section > Held by discrete fastening means tangential to shaft axis
Description: Apparatus where the guide or protector means encircles and is fixed to the shaft by a securing means having a longitudinal axis that touches a single point of a planar circle whose center is the longitudinal axis of the tool shaft.










Patents under this class:

Patent Number Title Of Patent Date Issued
8181722 Stabilizer assemblies with bearing pad locking structures and tools incorporating same May. 22, 2012
8074747 Stabilizer assemblies with bearing pad locking structures and tools incorporating same Dec. 13, 2011
7938202 Rotating drill pipe protector attachment and fastener assembly May. 10, 2011
7096940 Centralizer system for insulated pipe Aug. 29, 2006
7048064 Multi-unit centralizer May. 23, 2006
6464002 Whipstock assembly Oct. 15, 2002
6457519 Expandable centralizer Oct. 1, 2002
6250406 Connection arrangement for a two-piece annular body Jun. 26, 2001
6032748 Non-rotatable stabilizer and torque reducer Mar. 7, 2000
6023027 Cable guard having a hinge rod and for protecting cables extending along a tubing string Feb. 8, 2000
5810100 Non-rotating stabilizer and centralizer for well drilling operations Sep. 22, 1998
5806615 Apparatus for use in a wellbore Sep. 15, 1998
5692563 Tubing friction reducer Dec. 2, 1997
5553676 Reversible expander Sep. 10, 1996
5465759 Variable diameter pipe protector Nov. 14, 1995
5447207 Downhole tool Sep. 5, 1995
4907661 Drill pipe tubing and casing protectors Mar. 13, 1990
4865138 Drill string stabilizer Sep. 12, 1989
4381821 Blast joint and protection element therefor May. 3, 1983
4275935 Drilling stabilizer Jun. 30, 1981
4072369 Drill pipe stabbing protector Feb. 7, 1978











 
 
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