US Patent Issued to Valve & Machining on Dec. 16 for "Vacuum relief valve for railroad tank car" (Louisiana, Tennessee, Texas Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,056, issued on Dec. 16, was assigned to Valve & Machining LLC (McKenzie, Tenn.).

"Vacuum relief valve for railroad tank car" was invented by Roger Dale Danzy (Chatham, La.), Rusty Klasen (Houston) and Tommy Summers (McKenzie, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vacuum relief valve for a railroad tank car and methods for using the same to test the vacuum relief valve for leaks without requiring removal of the valve from the railroad tank car are described herein. According to one aspect of the invention, a vacuum relief valve described herein may be inspected for leaks without removing the vacuum relief valve from the railroad tank...