Patents by Inventor Enno H. Page

Enno H. Page 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).

  • Expendable die casting sand core
    Patent number: 4766943
    Abstract: Sand cores containing an acid curable binding agent are used in the production of die castings having undercut regions because of the favorable combination of shakeout properties, resistance to washout, and resistance to surface penetration.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: August 30, 1988
    Assignee: Farley Metals, Inc.
    Inventor: Enno H. Page
  • Expendable die casting sand core
    Patent number: 4413666
    Abstract: Sand cores containing an acid curable binding agent are used in the production of die castings having undercut regions because of the favorable combination of shakeout properties, resistance to washout, and resistance to surface penetration.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: November 8, 1983
    Assignee: NL Industries, Inc.
    Inventor: Enno H. Page
  • Method of die casting utilizing expendable sand cores
    Patent number: 4298051
    Abstract: Coated sand cores containing a boronated aluminum phosphate binding agent are used in the production of die castings having undercut regions because of the favorable combination of shakeout properties, resistance to washout, and resistance to surface penetration.
    Type: Grant
    Filed: September 25, 1979
    Date of Patent: November 3, 1981
    Assignee: NL Industries, Inc.
    Inventor: Enno H. Page
  • Injection ram control
    Patent number: 4252176
    Abstract: In a casting machine using an injection ram, the ram movements are measured accurately and reliably in spite of adverse ambient conditions by a special sensing arrangement located inside the hydraulic drive cylinder which drives the ram. A sonic energy pulse is generated in a waveguide near the hydraulic piston. This pulse propagates along the waveguide to a transducer at the cylinder wall. The time required for this pulse propagation corresponds to the position of the piston and hence of the injection ram.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: February 24, 1981
    Assignee: NL Industries, Inc.
    Inventor: Enno H. Page