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Hatachi Tool Engineering, Ltd.
| Hatachi Tool Engineering, Ltd. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20100178121 | SMALL-DIAMETER DEEP HOLE DRILL AND A MICRO DEEP HOLE DRILLING METHOD - A small-diameter drill for deep hole drilling is provided which is capable of inhibiting the cutting chips from getting bitten and producing a straightness for a drilled hole, thus suitable for drilling a hole having a depth (L) which is 15 or more times the diameter (D) of a drilled hole. The small-diameter drill | 07-15-2010 |