Inventor
WRULICH HERWIG
27 patents
⚠️ This page may combine multiple inventors who share the name “WRULICH HERWIG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VOEST ALPINE AG
21 patentsUS4247150AJan 27, 1981
Bit arrangement for a cutting tool
VOEST ALPINE AG124 citations96
US4591209AMay 27, 1986
Protecting device for partial-cut cutting machines
VOEST ALPINE AG26 citations92
US4542942ASep 24, 1985
Bit holder equipped with a spraying device
VOEST ALPINE AG48 citations92
US4784439ANov 15, 1988
Movable cutting machine
VOEST ALPINE AG21 citations82
US4555143ANov 26, 1985
Apparatus for cutting rock
VOEST ALPINE AG19 citations81
US4721340AJan 26, 1988
Process for controlling the movement of an universally swivellable cutting arm as well as control device for performing this process
VOEST ALPINE AG17 citations74
US4735458AApr 5, 1988
Device for intermittently subjecting axially shiftable bits of a cutting head to the action of pressurized fluids
VOEST ALPINE AG14 citations73
US4456306AJun 26, 1984
Cooling system for cooling the bits of a cutting machine
VOEST ALPINE AG18 citations70
US4289357ASep 15, 1981
Hollow cutting head
VOEST ALPINE AG17 citations70
US4572583AFeb 25, 1986
Cutting head for drift advancing machines and process for producing same
VOEST ALPINE AG8 citations69
US4770469ASep 13, 1988
Process for controlling the movement of a universally swivellable cutting arm of a partial cut cutting machine as well as apparatus for performing this process
VOEST ALPINE AG14 citations67
US4805963AFeb 21, 1989
Shield advancing machine
VOEST ALPINE AG15 citations66
US4884848ADec 5, 1989
Device and method for exploiting material
VOEST ALPINE AG15 citations65
US4537447AAug 27, 1985
Device for cooling the bits of cutting machine
VOEST ALPINE AG4 citations63
US4285549AAug 25, 1981
Assembly for cooling the teeth of the cutting head and the rock face
VOEST ALPINE AG6 citations63
US4585275AApr 29, 1986
Process for spraying the bits and/or the facing with pressurized liquid as well as apparatus for performing this process
VOEST ALPINE AG5 citations62
US4379594AApr 12, 1983
Process for sinking of shafts
VOEST ALPINE AG2 citations62
US4368918AJan 18, 1983
Process and apparatus for controlling the water supply to the cutting head of a cutting machine
VOEST ALPINE AG6 citations61
US4351564ASep 28, 1982
Device for preventing collision between part of the cutting arm and part of the loading ramp for a cutting machine
VOEST ALPINE AG5 citations55
US4506932AMar 26, 1985
Device for cooling the bits of a cutting machine
VOEST ALPINE AG1 citations52
US4778221AOct 18, 1988
Movable device for openpit mining
VOEST ALPINE AG1 citations44
VOEST AG
5 patentsUS4159746AJul 3, 1979
Bit of circular cross-section
VOEST AG21 citations78
US4157773AJun 12, 1979
Grease gun
VOEST AG15 citations74
US4091692AMay 30, 1978
Bit holder
VOEST AG13 citations74
US4111488ASep 5, 1978
Method for cutting minerals and cutting machine
VOEST AG11 citations73
US4076317AFeb 28, 1978
Device for guying a movable cutting machine
VOEST AG0 citations52