Patents by Inventor Denise D. Craig

Denise D. Craig 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).

  • Mixer for a plasticizing screw
    Patent number: 7296920
    Abstract: The invention provides an improved mixer section for a screw for a molding machine. The improved mixer section includes at least one conveying flight and at least one spill flight intersecting with the conveying flight. At least one notch is formed in the conveying flight to enable mixing between adjacent flow channels. The spill flight terminates near the output of the mixer to create a trap zone for any unmelts that reach that area of the mixer.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: November 20, 2007
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Raymond W. Zhang, Denise D. Craig
  • Mixer for a plasticizing screw
    Publication number: 20040257904
    Abstract: The invention provides an improved mixer section for a screw for a molding machine. The improved mixer section includes at least one conveying flight and at least one spill flight intersecting with the conveying flight. At least one notch is formed in the conveying flight to enable mixing between adjacent flow channels. The spill flight terminates near the output of the mixer to create a trap zone for any unmelts that reach that area of the mixer.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 23, 2004
    Applicant: Husky Injection Molding Systems Ltd.
    Inventors: Raymond W. Zhang, Denise D. Craig