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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:

Class Number Class Name Patents
76/5.4 Forging 1
76/5.6 Punching 1

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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