Patents by Inventor John T. Siemon, Jr.

John T. Siemon, Jr. 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).

  • Very high friction eleastomer formulation for use in static braking applications
    Patent number: 5093388
    Abstract: A high friction brake shoe formulation having a high static friction coefficient in shear of about 1.5 and low adhesion to materials having microscopic pores therein in contact with said brake shoe formulation which comprises a mixture of about 75 phr of neoprene W rubber and about 25 phr of neoprene WHV rubber; a first curing system comprising about 1 phr of a fatty acid, about 5 phr of ZnO, and about 1-3 phr of MgO; and a second curing system comprising about 1.25 phr of sulfur and about 0.6 phr of a sulfur accelerator; together with about 50 phr of a reinforcing agent of N555 or N650 carbon black.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: March 3, 1992
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John T. Siemon, Jr., Joseph F. Meier