E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/46 (2006.01) E21B 10/56 (2006.01)
Patent
CA 2373415
A gage trimmer and a bit incorporating such a gage trimmer are provided. The gage trimmer has an ultra hard material layer having a circumferential surface including a cylindrical portion and a flat surface for bearing against a circumferential wall of the a hole drilled by the bit. The ultra hard material layer is formed over a substrate interface surface. The flat surface does not extend to the interface surface.
Belnap Lynn L.
Eyre Ronald K.
Middlemiss Stewart
Oyen Wiggs Green & Mutala Llp
Smith International Inc.
LandOfFree
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