Patents by Inventor John A. MacRae

John A. MacRae 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).

  • Mount for grinding wheel
    Patent number: 4961290
    Abstract: A system for mounting the abrasive grinding members of a segmented grinding wheel in the chuck of a rotary surface grinder. A cushioning member is disposed about an end of each segment and extends laterally along its end surfaces. Clamps for holding the segments in place in the chuck bear upon the covering which may be a sleeve or cap which cushions the grinding segments from the force of the clamps and from possibly damaging contact with the chuck.
    Type: Grant
    Filed: September 18, 1985
    Date of Patent: October 9, 1990
    Assignee: Blanchard Abrasives, Inc.
    Inventors: John H. Hawkes, John A. MacRae