US Patent Issued to HITACHI GLOBAL AIR POWER US on Nov. 11 for "Variable capacity bypass valve for screw compressor" (American, Japanese Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,458, issued on Nov. 11, was assigned to HITACHI GLOBAL AIR POWER US LLC (Michigan City, Ind.).

"Variable capacity bypass valve for screw compressor" was invented by Jonathan D. Batdorff (Fort Wayne, Ind.), Hideki Fujimoto (Shizuoka, Japan) and Edward Noble (Chesterton, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A screw compressor and a variable capacity bypass valve therefor are provided. The variable capacity bypass valve includes a bore formed in a rotor bore discharge face of the compressor housing upstream of a compression chamber outlet end of the compression chamber, a slide valve member inserted into the bore to fill a cavity, the va...