Patents by Inventor Hugh N. Dyer

Hugh N. Dyer 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).

  • Process for the manufacture of endless coated abrasive articles
    Patent number: 4018574
    Abstract: An endless coated abrasive article is formed by helically winding a strip of abrasive material into a spiral of coils, the edges of which are in abutting engagement thus forming a spiral butt joint and coating the inner periphery of the helically wound strip of abrasive material with a continuous layer of resinous composition whereby an abrasive article is formed of greater width than the strip of abrasive material.
    Type: Grant
    Filed: December 16, 1970
    Date of Patent: April 19, 1977
    Assignee: Norton Compay
    Inventor: Hugh N. Dyer