Patents by Inventor Donald C. Heinn

Donald C. Heinn 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).

  • Patent number: 5575873
    Abstract: Endless coated abrasive articles having a splice. In general, the coated abrasive articles comprise a backing having abrasive grains bonded thereto by one or more layers of binder. This invention also provides a method of making the splice by using radiation curable adhesives, e.g., acrylated urethanes, and radiation energy to cure the adhesives. The radiation curable splice adhesive essentially solvent-free. Consequently, the time required for the solvent to flash off is eliminated and solvent removal is no longer an environmental concern. By utilizing a source of radiation energy, the splice adhesive can be solidified in less than one minute. Because the splice adhesive is fully solidified, coated abrasive belts can be packaged immediately after the splice is formed.
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: November 19, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jon R. Pieper, Donald C. Heinn, Eric G. Larson, Thomas E. Boettcher