Patents by Inventor Terry L. Erion

Terry L. Erion 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 for improving stength of gasifiable patterns
    Patent number: 4736786
    Abstract: A core assembly is formed by molding a destructible plastic form in abutting relation to a rigid bonded core. The core assembly can be used for casting large or long and thin castings. The rigid bonded core reinforces the plastic form against flexural and torsional forces as well as forces within the plastic tending to change the dimensional configuration of the plastic form.
    Type: Grant
    Filed: December 31, 1985
    Date of Patent: April 12, 1988
    Assignee: Deere & Company
    Inventors: David V. Trumbauer, Larry L. Fosbinder, Terry L. Erion
  • Method for forming castings having inserts
    Patent number: 4691754
    Abstract: A core assembly is formed by molding a destructible plastic form around at least one insert and optionally around a non-destructible core. The core assembly can be used, for example, for casting engine cylinder heads having valve seat inserts integral therewith. The plastic form retains and supports the inserts until the precise time the plastic is replaced by the molten metal.
    Type: Grant
    Filed: December 31, 1985
    Date of Patent: September 8, 1987
    Assignee: Deere & Company
    Inventors: David V. Trumbauer, Larry L. Fosbinder, Terry L. Erion