| 6149733 |
Apparatus and method for descaling a workpiece with a liquid jet |
Gerlinde Djumlija, Karl Kremmaier, Johann Oberhumer, Andreas Schweighofer |
2000-11-21 |
| 4884848 |
Device and method for exploiting material |
Hubert Weissensteiner, Bernward Bruns |
1989-12-05 |
| 4805963 |
Shield advancing machine |
Peter Kogler, Berthold Scheiber, Wulf Martin |
1989-02-21 |
| 4784439 |
Movable cutting machine |
Alfred Zitz, Erich Brandl |
1988-11-15 |
| 4778221 |
Movable device for openpit mining |
Horst Kolleth, Franz Menapace, Hubert Weissensteiner |
1988-10-18 |
| 4770469 |
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 |
Eduard Schellenberg, Gerhard Steinbrucker, Reinhard Neuper, Alfred Zitz |
1988-09-13 |
| 4735458 |
Device for intermittently subjecting axially shiftable bits of a cutting head to the action of pressurized fluids |
Franz Schoffmann, Wilfried Maier |
1988-04-05 |
| 4721340 |
Process for controlling the movement of an universally swivellable cutting arm as well as control device for performing this process |
Alfred Zitz, Otto Schetina |
1988-01-26 |
| 4591209 |
Protecting device for partial-cut cutting machines |
Bernhard Droscher, Otto Schetina, Alfred Zitz |
1986-05-27 |
| 4585275 |
Process for spraying the bits and/or the facing with pressurized liquid as well as apparatus for performing this process |
Alfred Zitz, Otto Schetina, Franz Schoffmann |
1986-04-29 |
| 4577892 |
Arrangement for supplying a pressurized liquid to a rotating machine part |
Franz Schoffmann, Wilfried Maier |
1986-03-25 |
| 4572583 |
Cutting head for drift advancing machines and process for producing same |
Gottfried Traumumiller, Wilfried Maier, Franz Schoffmann |
1986-02-25 |
| 4568127 |
Cutting head for drift advancing machines |
Gottfried Traumuller, Wilfried Maier, Franz Schoffmann |
1986-02-04 |
| 4555143 |
Apparatus for cutting rock |
Otto Schetina, Gottfried Siebenhofer, Wilfried Maier |
1985-11-26 |
| 4542942 |
Bit holder equipped with a spraying device |
Alfred Zitz, Otto Schetina, Wilfried Maier |
1985-09-24 |
| 4537447 |
Device for cooling the bits of cutting machine |
Alfred Zitz, Otto Schetina |
1985-08-27 |
| 4506932 |
Device for cooling the bits of a cutting machine |
Alfred Zitz, Otto Schetina |
1985-03-26 |
| 4456306 |
Cooling system for cooling the bits of a cutting machine |
Alfred Zitz, Otto Schetina, Siegmar Gekle |
1984-06-26 |
| 4379594 |
Process for sinking of shafts |
Alfred Zitz, Otto Schetina, Arnulf Kissich |
1983-04-12 |
| 4368918 |
Process and apparatus for controlling the water supply to the cutting head of a cutting machine |
Erich Droscher, Alfred Zitz, Otto Schetina |
1983-01-18 |
| 4351564 |
Device for preventing collision between part of the cutting arm and part of the loading ramp for a cutting machine |
Erich Droscher, Hans P. Pfundner |
1982-09-28 |
| 4289357 |
Hollow cutting head |
Rudolf Hintermann, Alfred Zitz, Otto Schetina |
1981-09-15 |
| 4285549 |
Assembly for cooling the teeth of the cutting head and the rock face |
Alfred Zitz, Otto Schetina |
1981-08-25 |
| 4247150 |
Bit arrangement for a cutting tool |
Otto Schetina, Alfred Zitz |
1981-01-27 |