Patents by Inventor Loren Albrecht

Loren Albrecht 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).

  • Injector with improved small shot metering
    Patent number: 6921190
    Abstract: An injection screw and barrel for small injection molding shots employs separate plunger and flight sections so that the plunger section may be arbitrarily reduced in diameter without adversely affecting the threaded portion of the flight section. Melt passes from the flight section to a metering area through a hollow bore in the plunger section.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: July 26, 2005
    Assignee: MGS Mfg. Group Inc.
    Inventors: Loren Albrecht, John J. Hahn
  • Cold runner system for sandwich molding
    Patent number: 6824726
    Abstract: A method of sandwich molding, in which a first thermoplastic material is injected into a mold cavity followed by the injection of a second thermoplastic material expanding within the first thermoplastic material, eliminates the need for heated runner systems communicating from the injection nozzle of the injection molding machine to the mold cavity by employing a cold runner having sufficiently slow solidification time to allow subsequent injections from two injection sources. The backflow into the inactive branch is prevented by maintaining the injection nozzle against the mold until molding is complete.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: November 30, 2004
    Assignee: MGS Mfg. Group Inc.
    Inventors: Theodore Lemke, John J. Hahn, Brian Hartlmeier, Loren Albrecht
  • Injector with improved small shot metering
    Publication number: 20040213076
    Abstract: An injection screw and barrel for small injection molding shots employs separate plunger and flight sections so that the plunger section may be arbitrarily reduced in diameter without adversely affecting the threaded portion of the flight section. Melt passes from the flight section to a metering area through a hollow bore in the plunger section.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 28, 2004
    Inventors: Loren Albrecht, John J. Hahn
  • Cold runner system for sandwich molding
    Publication number: 20030234473
    Abstract: A method of sandwich molding, in which a first thermoplastic material is injected into a mold cavity followed by the injection of a second thermoplastic material expanding within the first thermoplastic material, eliminates the need for heated runner systems communicating from the injection nozzle of the injection molding machine to the mold cavity by employing a cold runner having sufficiently slow solidification time to allow subsequent injections from two injection sources. The backflow into the inactive branch is prevented by maintaining the injection nozzle against the mold until molding is complete.
    Type: Application
    Filed: June 24, 2002
    Publication date: December 25, 2003
    Inventors: Theodore Lemke, John J. Hahn, Brian Hartlmeier, Loren Albrecht