Patents by Inventor Angus J. MacGregor

Angus J. MacGregor 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 making cast iron engine blocks and the like
    Patent number: 4493359
    Abstract: A method for making grey iron castings having as a cardinal feature that the molten grey iron, after being made and prior to being poured into the molds, is maintained for a period of from one and one-half to two and one-half hours, preferably about two hours, at a substantially constant temperature. The resulting greatly increased homogeneity and temperature uniformity of the molten metal throughout its mass greatly improves the quality and quality control of the castings made.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: January 15, 1985
    Assignee: American Motors (Canada) Inc.
    Inventors: Joseph A. Bostater, Angus J. MacGregor, Aaron A. Gesicki