ALEXANDRIA, Va., March 5 -- United States Patent no. 12,240,589, issued on March 4, was assigned to Textron Innovations Inc. (Providence, R.I.).
"Linear actuator system" was invented by Andrew Paul Haldeman (Fort Worth, Texas) and Robert Reynolds (Euless, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A linear actuator for axially translating a control tube to change the pitch of rotor blades at a top portion of the control tube, the linear actuator including an outer sleeve fixed in a stationary position with the control tube extending through the outer sleeve, a screw nut connected by a threaded interface to the control tube, and an actuator motor coupled to the screw nut to rotate the screw nut and ...