ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,364, issued on Oct. 14, was assigned to Aperia Technologies Inc. (Hayward, Calif.).
"Two-stage pump and method of operation" was invented by Kevin Ciocia (Burlingame, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In variants, a two-stage pump can include a piston and a cylinder cooperatively defining a first stage in front of the piston fluidly connected to a second stage behind the piston, wherein a forward stroke of the piston pressurizes working fluid in the first stage and forces pressurized working fluid into the second stage, and a backward stroke of the piston further pressurizes working fluid in the second stage and exhausts pressuri...