Inventor
CAWTHORNE CHRIS E
US25 patents
⚠️ This page may combine multiple inventors who share the name “CAWTHORNE CHRIS E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SMITH INTERNATIONAL
23 patentsUS6516293B1Feb 4, 2003
Method for simulating drilling of roller cone bits and its application to roller cone bit design and performance
SMITH INTERNATIONAL207 citations99
US6439326B1Aug 27, 2002
Centered-leg roller cone drill bit
SMITH INTERNATIONAL218 citations99
US5351770AOct 4, 1994
Ultra hard insert cutters for heel row rotary cone rock bit applications
SMITH INTERNATIONAL183 citations99
US6199645B1Mar 13, 2001
Engineered enhanced inserts for rock drilling bits
SMITH INTERNATIONAL125 citations98
US5341890AAug 30, 1994
Ultra hard insert cutters for heel row rotary cone rock bit applications
SMITH INTERNATIONAL138 citations98
US6484826B1Nov 26, 2002
Engineered enhanced inserts for rock drilling bits
SMITH INTERNATIONAL82 citations97
US6460637B1Oct 8, 2002
Engineered enhanced inserts for rock drilling bits
SMITH INTERNATIONAL86 citations97
US5839526ANov 24, 1998
Rolling cone steel tooth bit with enhancements in cutter shape and placement
SMITH INTERNATIONAL138 citations97
US5868213AFeb 9, 1999
Steel tooth cutter element with gage facing knee
SMITH INTERNATIONAL64 citations96
US5842701ADec 1, 1998
Dual functioning seal for rock bits
SMITH INTERNATIONAL57 citations96
US5172779ADec 22, 1992
Radial crest insert
SMITH INTERNATIONAL73 citations96
US4832139AMay 23, 1989
Inclined chisel inserts for rock bits
SMITH INTERNATIONAL82 citations96
US6561293B2May 13, 2003
Cutter element with non-linear, expanded crest
SMITH INTERNATIONAL51 citations95
US6123337ASep 26, 2000
Composite earth boring bit seal
SMITH INTERNATIONAL69 citations94
US6179296B1Jan 30, 2001
Dual functioning seal for rock bits
SMITH INTERNATIONAL27 citations93
US6170830B1Jan 9, 2001
Dual functioning seal for rock bits
SMITH INTERNATIONAL23 citations93
US6782959B2Aug 31, 2004
Cutter element with non-linear, expanded crest
SMITH INTERNATIONAL26 citations92
US6336512B1Jan 8, 2002
Drill bit having canted seal
SMITH INTERNATIONAL35 citations92
US5485890AJan 23, 1996
Rock bit
SMITH INTERNATIONAL27 citations92
US6460636B1Oct 8, 2002
Drill bit inserts with variations in thickness of diamond coating
SMITH INTERNATIONAL27 citations91
US5842700ADec 1, 1998
Composite rock bit seal
SMITH INTERNATIONAL35 citations90
US5056610AOct 15, 1991
Shale diverting means for a sealed bearing drill bit
SMITH INTERNATIONAL21 citations78
US7416035B2Aug 26, 2008
Shaped inserts with increased retention force
SMITH INTERNATIONAL1 citations49