Inventor
BELL JR OLIVER A
28 patents
⚠️ This page may combine multiple inventors who share the name “BELL JR OLIVER A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
COLT IND OPERATING CORP
19 patentsUS4071729AJan 31, 1978
Adaptive control system and method for electrical discharge machining
COLT IND OPERATING CORP54 citations92
US4460815AJul 17, 1984
Current limit system and method for electrical discharge machining apparatus
COLT IND OPERATING CORP10 citations73
US4320278AMar 16, 1982
Servo feed system for electrical discharge machining apparatus
COLT IND OPERATING CORP9 citations73
US4319114AMar 9, 1982
Current limit system for electrical discharge machining apparatus
COLT IND OPERATING CORP9 citations73
US4306135ADec 15, 1981
Power output module for electrical discharge machining power supply circuit
COLT IND OPERATING CORP7 citations73
US4303957ADec 1, 1981
Gap condition sensing circuit for electrical discharge machining power supply
COLT IND OPERATING CORP11 citations73
US4296302AOct 20, 1981
Adaptive control of gap voltage and power to control servo operation of an electrical discharge machining apparatus
COLT IND OPERATING CORP11 citations73
US4292490ASep 29, 1981
Electrical discharge machining power supply with digitally controlled on and off time and protective system
COLT IND OPERATING CORP16 citations73
US4267423AMay 12, 1981
Protection circuit for electrical discharge machining power supply
COLT IND OPERATING CORP16 citations73
US4258243AMar 24, 1981
Over current protection system for electrical discharge machining apparatus
COLT IND OPERATING CORP7 citations73
US4002885AJan 11, 1977
Servo feed system for a wire electrode type electrical discharge machining apparatus
COLT IND OPERATING CORP8 citations73
US3987271AOct 19, 1976
Electrical discharge machining power supply circuit
COLT IND OPERATING CORP13 citations73
US4471198ASep 11, 1984
Cut-off protection system for electrical discharge machining apparatus
COLT IND OPERATING CORP2 citations62
US4320279AMar 16, 1982
Programmable pulse generator for electrical discharge machining apparatus
COLT IND OPERATING CORP6 citations62
US4267422AMay 12, 1981
Power supply circuit of the high voltage type for electrical discharge machining apparatus
COLT IND OPERATING CORP2 citations62
US4254320AMar 3, 1981
Power output module for electrical discharge machining power supply circuit
COLT IND OPERATING CORP2 citations62
US4249059AFeb 3, 1981
Gap condition light indicator system for electrical discharge machining apparatus
COLT IND OPERATING CORP3 citations62
US4056702ANov 1, 1977
Electrical discharge machining power circuit
COLT IND OPERATING CORP3 citations62
US4134000AJan 9, 1979
Protection circuit for electrical discharge machining power supply apparatus
COLT IND OPERATING CORP0 citations34