AMERICAN AXLE & MANUFACTURING v. NEAPCO HOLDINGS, decided October 3, 2019, Statutory Subject Matter

U.S. Patent No. 7,774,911 is directed to manufacturing driveline propeller shafts with vibration attenuating liners (pages 3-5).  Claim 1 recites tuning the liner for two types of vibrations and positioning that liner within a shaft to provide recited amounts of damping (page 5). Based on interpretation of “tuning,” the claims are directed to controlling mass […]