ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,920, issued on Dec. 2.
"Siphon systems and vacuum pumps" was invented by Thomas Falkland Gardiner (Waimauku, New Zealand).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vacuum pump for use with a siphon system to continuously purge gases that accumulate in a high point of the siphon system, or for priming the inlet to a pump, or to create vacuum for another purpose. Siphon systems require regular purging of gases when operating for long periods of time. The vacuum pump provides a mechanism that operates in a cycling manner. A first stage of the cycle involves filling a chamber using a pressurised liquid supply, and purging all gases from the chamber...