Assignee
OBARA CORP
JP46 patents
Top patents by PatentIndex Score
US6603228B1Aug 5, 2003
Driving unit of a welding equipment
OBARA CORP62 citations96
US6223971B1May 1, 2001
Driving unit of a welding equipment
OBARA CORP72 citations96
US5072090ADec 10, 1991
Inverter type resistance welding machine
OBARA CORP23 citations93
US5628923AMay 13, 1997
Robot welding gun unit
OBARA CORP23 citations92
US5436422AJul 25, 1995
Resistance welding control method
OBARA CORP29 citations92
US4917619AApr 17, 1990
Tool changer for welding robot
OBARA CORP34 citations92
US4733042AMar 22, 1988
Welding control apparatus including a pressure regulating valve operated in accord with predetermined schedule of variations of a welding force control variable
OBARA CORP27 citations90
US5528011AJun 18, 1996
Control system of a C-type welding gun
OBARA CORP43 citations87
US4739149AApr 19, 1988
Current sensor for welder conductor
OBARA CORP23 citations82
US4762446AAug 9, 1988
Cutter of tip dresser for welding apparatus
OBARA CORP21 citations81
US5914056AJun 22, 1999
Method of controlling a pressure application resistant welding machine
OBARA CORP19 citations79
US6718837B2Apr 13, 2004
Driving unit for pressure application shaft in a welding apparatus
OBARA CORP12 citations74
US4750101AJun 7, 1988
Transformer apparatus with rectifier
OBARA CORP7 citations74
US5091623AFeb 25, 1992
Welding gun provided with a backup cylinder
OBARA CORP8 citations73
US5010228AApr 23, 1991
Tool changer for welding robot
OBARA CORP18 citations73
US4727775AMar 1, 1988
Dressing device for tip of welding gun
OBARA CORP10 citations73
US5198633AMar 30, 1993
Stopper device in a welding robot gun
OBARA CORP8 citations72
US5157234AOct 20, 1992
C-type welding gun robot holding apparatus
OBARA CORP8 citations72
US5153405AOct 6, 1992
Cooling water piping system for welding robot gun
OBARA CORP8 citations72
US5113053AMay 12, 1992
Welding gun for robot
OBARA CORP8 citations72
US5036175AJul 30, 1991
Welding gun having equalizing function
OBARA CORP13 citations72
US4879447ANov 7, 1989
Piston actuated welding gun with pivoting arm
OBARA CORP8 citations72
US4999477AMar 12, 1991
Resistance measuring mechanism in a resistance welding machine
OBARA CORP15 citations71
US7105767B2Sep 12, 2006
Fixed type electrode tip removal device
OBARA CORP7 citations70
US4855532AAug 8, 1989
Welding cable
OBARA CORP8 citations66
US7322509B2Jan 29, 2008
Friction stir spot joining device
OBARA CORP4 citations63
US4577090AMar 18, 1986
Primary cable apparatus for robot welding gun
OBARA CORP6 citations63
US7383976B2Jun 10, 2008
Friction stir spot joining device
OBARA CORP2 citations62
US5333975AAug 2, 1994
Method of and apparatus for dressing tips for welding machines
OBARA CORP6 citations62
US11203081B2Dec 21, 2021
Removal device of welding electrode tip
OBARA CORP2 citations61
US6252193B1Jun 26, 2001
X type electric welding machine
OBARA CORP4 citations61
US5173066ADec 22, 1992
Chip holder fixing device
OBARA CORP4 citations61
US5164564ANov 17, 1992
Welding robot gun connecting device
OBARA CORP3 citations61
US5138129AAug 11, 1992
Welding transformer in a welding gun for robot
OBARA CORP5 citations61
US5111018AMay 5, 1992
Connection member in a welding gun for robot
OBARA CORP4 citations61
US5122634AJun 16, 1992
Welding transformer control apparatus
OBARA CORP4 citations60
US5026963AJun 25, 1991
C-type welding gun
OBARA CORP6 citations60
US7105768B2Sep 12, 2006
Fixed type electrode tip take-out device
OBARA CORP5 citations59
US5981898ANov 9, 1999
Method of controlling electrode pressure application force in an electric gun
OBARA CORP4 citations58
US4868348ASep 19, 1989
Welding cable
OBARA CORP2 citations55
US7422140B2Sep 9, 2008
Friction stir spot joining device
OBARA CORP1 citations52
US6813538B2Nov 2, 2004
Welding system
OBARA CORP1 citations50
US5084605AJan 28, 1992
Welding torch having improved gas jetting capability
OBARA CORP2 citations50
US12311460B2May 27, 2025
Replacing and holding device for electrode tip
OBARA CORP0 citations47
US6959228B2Oct 25, 2005
Method of protecting data stored in a memory of welding controller
OBARA CORP0 citations43
US4673793AJun 16, 1987
Connecting metal fittings for resistance welder
OBARA CORP0 citations42