| KOMATSU INDUSTRIES CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20110045113 | DIE CUSHION DEVICE - In the die cushion device, a shock absorber device relieves shock between a cushion pad and a support section. The shock absorber device includes a damping section and an elastic section. The damping section generates reaction force in accordance with the relative speed of the cushion pad with respect to the support section. The elastic section generates reaction force in accordance with the relative displacement of the cushion pad with respect to the support section. The controller section controls a servomotor so that a speed difference between the speed of the slide member and the speed of the support section is set to be a predetermined target speed difference value that changes over time. | 02-24-2011 |
| 20100155373 | PLASMA TORCH, PLASMA TORCH NOZZLE, AND PLASMA-WORKING MACHINE - A plasma torch includes a torch main unit and a nozzle. The torch main unit has a nozzle seat member on which the nozzle is mounted. The nozzle is arranged to move toward or away from the nozzle seat member in a direction substantially parallel to a center axis of the nozzle when the nozzle is mounted on or removed from the nozzle seat member. The nozzle has an electroconductive surface facing the nozzle seat member. The torch main unit has an elastic electric contact portion contacting with the electroconductive surface of the nozzle to form an electroconductive path for a pilot arc to the nozzle. The electroconductive surface of the nozzle presses the electric contact portion in the direction substantially parallel to the center axis when the nozzle is moved toward the nozzle seat member to mount the nozzle on the nozzle seat member. | 06-24-2010 |
| 20090183612 | Cutting Machine and Method for Controlling Head Moving Device of Same - A cutting machine secures safety of a worker during movement of a head without lowering production efficiency. When moving a cutting head without cutting material to be cut upon a table, a moving truck and the cutting head are moved at a higher speed as compared with when cutting the material to be cut. If, when the moving truck and the cutting head are moving at high speed, a worker who is present upon the table intercepts either of light beams which are located in front of and behind a horizontal beam, then this movement speed is decelerated to a safe low speed, but the task of cutting the material is not interrupted. Subsequently, when the worker approaches the horizontal beam closer, and contacts a wire or a bar in the vicinity of the horizontal beam, movement of the moving truck and the cutting head is forcibly stopped. | 07-23-2009 |
| 20080314875 | THERMAL CUTTER - A thermal cutter for cutting with heat a board mounted upon a table having an internal space includes a plurality of walls and a sound absorbent material. The walls are disposed in the internal space of the table to partition a plurality of exhaust chambers with each of the exhaust chambers having an aperture that opens towards a side on which the board is mounted. The sound absorbent material is provided to at least a portion of at least one of the walls, the sound absorbent material being removably coupled to the table. | 12-25-2008 |
| 20080302767 | Plasma Cutting Machine - A plasma cutting machine cuts stainless steel with good quality. An inactive gas (nitrogen) is supplied as a plasma gas, and a combustible gas (propane) having a specific gravity higher than that of air and having a reducing ability or a mixed gas of the combustible gas (propane) and an inactive gas (nitrogen) is supplied as an assist gas to a plasma torch. The combustible gas (propane) contained in the assist gas is not supplied in the pre-flow interval and after-flow interval, and is supplied only in the plasma arc generation interval. | 12-11-2008 |
