ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,833, issued on May 13, was assigned to Abaco Drilling Technologies LLC (Houston).
"Rubber compound with fiber reinforcement" was invented by Peter Thomas Cariveau (Houston) and Robert Bohmer (Kingwood, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rubber compound for use in a stator. The rubber compound includes a fiber reinforcement, which may include fibrillated fibers in some embodiments, and short chop fibers in others. Fibers in the fiber reinforcement create a grain direction. In some embodiments, the rubber compound has a first value for 25% tensile Modulus across the grain and a second value for 25% tensile Modulus with the grain, w...