Patents Assigned to AMIC Industries Limited
  • Drill bit
    Patent number: 5494382
    Abstract: A rotary or rotary/percussion drill bit 10 has a taper socket 14 in one end. A wall 18 bounds the socket 14. A plurality of recesses 20 is provided in the wall. In one embodiment, each recess 20 extends longitudially and resembles a flute. It has a valley 22 flanked by peaks 24. In another embodiment, the recesses may be circumferential, e.g. helical.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: February 27, 1996
    Assignee: AMIC Industries Limited
    Inventor: Stephanus F. Kloppers