Patents by Inventor D. Patrick Butler

D. Patrick Butler 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).

  • Rubber compound for tracked vehicle track pads
    Patent number: 5264290
    Abstract: A highly improved elastomeric composition, process, and articles made thef, wherein the novel composition is characterized by greatly increased wear longevity, thermomechanical stability, highly improved tear and tensile strength at high temperature usage, in addition to high resistance to burning in open flame, as well as high resistance to cutting, chipping, cracking and crack propagation particularly in product use for tank track pads and other related track system elastomeric component products; wherein the improved composition is a unique combination of its respective polymer, filler, curing and antidegradant system, in which the polymer system either consists of about 100 parts by weight of highly saturated nitrile polymer or of various novel blends of the highly saturated usually in majority amounts together with minority amounts of carboxylated nitrile, with or without additional minority or near equal parts of nitrile rubber; and wherein the curing system may include various blends of from between ab
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: November 23, 1993
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paul Touchet, Gumersindo Rodriguez, Paul E. Gatza, D. Patrick Butler, Dawn M. Crawford, Alan R. Teets, Henry O. Feuer, David P. Flanagan