US Patent Issued to Sonnax Transmission on Oct. 20 for "Torque converter clutch apply switch valve with internal limit valve" (Vermont, New Hampshire Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,347, issued on Oct. 20, was assigned to Sonnax Transmission Co. (Bellows Falls, Vt.).

"Torque converter clutch apply switch valve with internal limit valve" was invented by Andrew Deyo (Langdon, N.H.), Todd V. Mangiagli (Westminster, Vt.) and James A. Dial (Bellows Falls, Vt.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A switch valve for a torque converter clutch switch valve body having a bore with line-in and apply ports. The switch valve has a plunger with a bore defined therein. The plunger is configured for moving in the switch valve body bore between first and second positions, whereby fluid communication with the line-in port is prevented ...