ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,979, issued on June 10, was assigned to Kubota Corp. (Osaka, Japan).
"Working machine" was invented by Kazuki Ueda (Osaka, Japan), Yuji Fukuda (Osaka, Japan) and Ryota Hamamoto (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a working machine, a controller decreases a supply amount of hydraulic fluid from a travel pump to a travel motor based on a travel state of a machine body when a speed-change instruction is issued by operating a switch. When a speed-increase operation is performed, the controller switches the travel switching valve from the first state to the second state in a prior period lasting up to when the supply amount to...