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Class Information
Number: 76/5.1
Name: Metal tools and implements, making > Machines > Drill-forming or sharpening
Description: Machine specifically adapted to change a member having some of the physical characteristics of a drill (i.e., a drill blank) to a member having the physical characteristics of a drill; or (2) to make the cutting of a drill of better shape for cutting.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8091459 |
Method and apparatus for making a rotary tool for chip removing machining |
Jan. 10, 2012 |
| 5904939 |
Extruder for extrusion manufacturing |
May. 18, 1999 |
| 5780063 |
Apparatus for producing a hard metal or ceramic rod having helical bores |
Jul. 14, 1998 |
| 5601857 |
Extruder for extrusion manufacturing |
Feb. 11, 1997 |
| 5367836 |
Automatic drill loader |
Nov. 29, 1994 |
| 5263286 |
Drill and drill grinding method and apparatus |
Nov. 23, 1993 |
| 5201795 |
Rock bit manufacturing method |
Apr. 13, 1993 |
| 5182971 |
Button sharpening |
Feb. 2, 1993 |
| 4887493 |
Roller cutter drill bit and method of forming |
Dec. 19, 1989 |
| 4837983 |
Drill bit sharpening apparatus |
Jun. 13, 1989 |
| 4779440 |
Extrusion tool for producing hard-metal or ceramic drill blank |
Oct. 25, 1988 |
| 4412462 |
Drill adjusting tool |
Nov. 1, 1983 |
| 4380295 |
Automatic drill deburring and sorting machine |
Apr. 19, 1983 |
| 4164878 |
Well drilling bit dressing apparatus and method |
Aug. 21, 1979 |
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