Patents Assigned to AMIC Industries Limited
  • Method of manufacture high carbon content steel
    Patent number: 5855701
    Abstract: Alloyed steel with high carbon content having a composition, expressed in percentage weight: carbon from 1.1 to 2.0%, manganese from 0.5 to 3.5%, chromium from 1.0 to 4.0%, silicon from 0.6 to 1.2%, the remainder being iron with the usual impurity content, such that it provides a metallographic structure mainly of non-equilibrium fine pearlite and that its hardness is between 47 Rc and 54 Rc.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: January 5, 1999
    Assignees: Magotteaux International S.A., Amic Industries Limited, Scaw Metals Division
    Inventor: Michel Bonnevie
  • 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