ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,743, issued on Nov. 3, was assigned to Industrial Technologies and Services LLC (Davidson, N.C.).
"Low coefficient of expansion rotors for vacuum boosters" was invented by Roger Clive Palmer (Wayne, Pa.), Kyle Maples (Wayne, Pa.) and Vladimir Muzichuk (Wayne, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vacuum booster assembly includes, but is not limited to, a booster housing defining a booster chamber and including a gas inlet and a gas outlet; a first rotor positioned within the booster chamber and adapted for rotation therein, the first rotor including a first shaft and at least two lobes defining a first lobe profile; and a second rotor ...