Patents by Inventor Stefan Diosan

Stefan Diosan 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).

  • Method of removing stuck sprue and tool for removal therein
    Patent number: 5441399
    Abstract: An improved method of removing a stuck sprue from the ejector assembly of an injection molding machine and a tool for use in the method in which the tool has a body with a hollow lower portion having a bottom edge with peripherally spaced indentations, In the method, the tool is first heated to above the melting point of the molding material and the lower end is inserted into the stuck sprue. The tool is cooled to below the melting point of the molding material and then rocked back and forth to free the sprue from the ejector mechanism.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: August 15, 1995
    Assignee: Wea Manufacturing Inc.
    Inventors: Norman B. Campbell, Francisco Garcia, Stefan Diosan
  • Method of removing stuck sprue
    Patent number: 5391332
    Abstract: An improved method of removing a stuck sprue from the ejector assembly of an injection molding machine and a tool for use in the method in which the tool has a body with a hollow lower portion having a bottom edge with peripherally spaced indentations. In the method, the tool is first heated to above the melting point of the molding material and the lower end is inserted into the stuck sprue. The tool is cooled to below the melting point of the molding material and then rocked back and forth to free the sprue from the ejector mechanism.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: February 21, 1995
    Assignee: WEA Manufacturing Inc.
    Inventors: Norman B. Campbell, Francisco Garcia, Stefan Diosan