Title:
ツイストドリル
Document Type and Number:
Japanese Patent JP4366044
Kind Code:
B2
Abstract:
A twist drill including a spiral-forming hollow shaft (3) having a spiral-shaped inner surface, and drilling head(5) and shank (6) connected with the shaft (3) at its opposite ends, respectively; and a method for forming such a twist drill.
More Like This:
| WO/2010/093485 | MULTI-PIECE DRILL HEAD AND DRILL INCLUDING THE SAME |
| JP2004261930 | DRILL |
| WO/1999/028093 | DRILL BITS AND HOLDERS THEREFOR |
Inventors:
Robert es citta
Troy dee wells
Christian puzzi
Troy dee wells
Christian puzzi
Application Number:
JP2002141608A
Publication Date:
November 18, 2009
Filing Date:
May 16, 2002
Export Citation:
Assignee:
Maschinenbau Hilti OHG
International Classes:
B23B51/00; B23B51/02; B23P15/32; B28D1/14; E21B10/44; B21H3/10
Domestic Patent References:
| JP11285911A | ||||
| JP5228707A | ||||
| JP62220738A | ||||
| JP2001526118A | ||||
| JP7227711A | ||||
| JP9038809A |
Foreign References:
| WO1999032245A1 | ||||
| US4830000 |
Attorney, Agent or Firm:
Kenji Sugimura
Tatsuya Sawada
Kosaku Sugimura
Tatsuya Sawada
Kosaku Sugimura