Inventor
LANGFORD JR JAMES W
8 patents
Patents
8 patentsUS4722405AFeb 2, 1988
Wear compensating rock bit insert
DRESSER IND162 citations98
US5755298AMay 26, 1998
Hardfacing with coated diamond particles
DRESSER IND117 citations97
US5755299AMay 26, 1998
Hardfacing with coated diamond particles
DRESSER IND174 citations97
US4875532AOct 24, 1989
Roller drill bit having radial-thrust pilot bushing incorporating anti-galling material
DRESSER IND92 citations95
US4397361AAug 9, 1983
Abradable cutter protection
DRESSER IND138 citations95
US4058177ANov 15, 1977
Asymmetric gage insert for an earth boring apparatus
DRESSER IND94 citations94
US4934467AJun 19, 1990
Drill bit wear resistant surface for elastomeric seal
DRESSER IND32 citations92
US4256351AMar 17, 1981
Sealing system for a rolling cone cutter earth boring bit
DRESSER IND30 citations92