Patents Assigned to H. L. Blachford Ltd/Ltee
  • Lubricants for powdered metals and powdered metal compositions containing said lubricants
    Patent number: 7329302
    Abstract: Particulate lubricants are disclosed which comprise discrete particles of a fatty monoamide, especially oleamide and discrete particles of at least one other powder metallurgy lubricant, which provide a synergistic free-flowing composition; there are also provided novel compositions of matter for forming sintered metal components comprising a mixture of sinterable powdered metal and the particulate lubricants.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: February 12, 2008
    Assignee: H. L. Blachford Ltd./Ltee
    Inventor: James M. McCall
  • Boric acid-containing lubricants for powered metals, and powered metal compositions containing said lubricants
    Patent number: 6001150
    Abstract: Boric acid-containing lubricants are disclosed which consist essentially of boric acid and at least one other powder metallurgy lubricant and provide a synergistic free-flowing composition. There are also provided novel compositions of matter for forming sintered metal components comprising a mixture of sinterable, powdered metal and the said lubricants.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: December 14, 1999
    Assignee: H.L. Blachford Ltd./LTEE
    Inventors: James M. McCall, John Blachford, Margaret Cole
  • Method of drawing a metal wire and lubricant composition therefor
    Patent number: 4404828
    Abstract: A lubricant composition for drawing metal wire comprises a lubricant which may be particulate, liquid or semi-liquid and discrete microcapsules having a liquid core, which enhances the wire drawing agent; in particular the liquid core may be an extreme pressure additive or an anti-wear additive; the liquid is released by rupture of the microcapsules in the die so that the liquid is released at the site where it is required.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: September 20, 1983
    Assignee: H. L. Blachford Ltd/Ltee
    Inventor: John Blachford