ALEXANDRIA, Va., March 31 -- United States Patent no. 12,588,587, issued on March 31, was assigned to Kubota Corp. (Osaka, Japan).

"Rotatable ring control mechanism and method for control arm of wheeled lawn care machine" was invented by Douglas Swartz (Gainesville, Ga.), Min Sung Kim (Gainesville, Ga.) and Michael Phan (Gainesville, Ga.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotatable ring control mechanism is mounted on a control arm of a riding mower and allows a user to control a function of the riding mower. The mechanism includes an inner support component and an outer interface ring. The inner component secures the mechanism to the control arm and includes a signal generating technology rece...