ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,870, issued on July 29, was assigned to Bela Cseri Besitzunternehmung GbR (Nohra, Germany).
"Quick-change device having a control device with a mechanically and hydraulically controllable valve" was invented by Bela Cseri (Langenau, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A quick-change device for coupling an attachment unit to a work machine, having a securing element, which is pushed into a locking position and an unlocking position to lock or secure and unlock or release, respectively, the coupled attachment unit. To displace the securing element, a control device is present, which has a switch valve, which can be actuated hydrauli...