Patents by Inventor Edward George Feldcamp

Edward George Feldcamp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Extrusion die
    Patent number: 7938641
    Abstract: An extrusion die comprises a die body defining a die cavity (18). The cavity (18) is shaped such that the die body includes a male portion (24) and a female portion (26). A leading edge (18a) of a part of one side of the die cavity (18) is out of alignment with a leading edge (18a) of an opposing part of the die cavity (18), at rest, such that, in use, when deflection of parts of the die occurs, the leading edges (18a) substantially align.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: May 10, 2011
    Assignee: Preform Dies Limited
    Inventor: Edward George Feldcamp
  • Manufacture of extrusion dies
    Patent number: 6062059
    Abstract: An extrusion die (11) comprises a die cavity (12) having a shape corresponding to the cross-sectional shape of the required extrusion, and a preform chamber (19) in communication with the die cavity (12), the preform chamber (19) being of generally similar shape to the die cavity (12) but of greater cross-sectional area, so that regions of the preform chamber (19) communicate with corresponding regions respectively of the die cavity (12). Each region of the preform chamber (19) has a bearing length (20) which is so determined in relation to its dimensions and position that, in use, extrusion material passing through each region of the preform chamber (19) is constrained to move at a velocity such that the material passes through all regions of the die cavity (12) at a substantially uniform velocity.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: May 16, 2000
    Assignee: Ailsa Investments Limited
    Inventor: Edward George Feldcamp
  • Milling machines with pivotal head
    Patent number: 4020743
    Abstract: A milling machine comprising a base, a milling head mounted on the base for movement relative thereto about a horizontal pivot axis, means for holding the milling head in a selected angular position about said axis and drive means for transmission of drive to a milling cutter held, in use, by holding means on the head, said holding means and pivot axis being so disposed relative to one another that said pivot axis intersects the axis of rotation of the milling cutter at the cutting location.
    Type: Grant
    Filed: December 18, 1975
    Date of Patent: May 3, 1977
    Inventor: Edward George Feldcamp
  • Methods and equipment for machining electrodes
    Patent number: 4005635
    Abstract: A rough-cut blank is machined to provide a spark erosion electrode for use in the manufacture of an extrusion tool by bonding the blank to a base plate, fixing the base plate to a milling machine table and milling the blank. The milled blank is subsequently detached from the base plate by breaking the bond between the blank and the base plate.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: February 1, 1977
    Inventor: Edward George Feldcamp