ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,136, issued on May 6, was assigned to Festo SE & Co. KG (Esslingen, Germany).
"Process valve apparatus and method" was invented by Holger Steltner (Esslingen, Germany), Matthias Joachimsthaler (Karlsruhe, Germany) and Jurgen Ruoff (Stuttgart, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A process valve apparatus includes a process fitting, a pneumatic valve drive and a control device with a control unit. The control device is configured to carry out a partial stroke test. The control unit is configured to control a valve device of the control device with an electrical control signal in order to effect a pneumatic actuation of the valve dri...