ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,080, issued on Feb. 24, was assigned to HITACHI ASTEMO LTD. (Ibaraki, Japan).
"Electric actuator and vehicle drum brake including the same" was invented by Koji Usui (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric actuator includes a forwardly and reversely rotatable electric motor, a motion conversion mechanism configured to convert rotation of the electric motor into reciprocating linear motion of a screw shaft, an actuator case containing the electric motor and the motion conversion mechanism, and a boot covering a portion of the screw shaft that extends out of the actuator case. A vent is formed on the actuator case. T...