ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,453, issued on Feb. 17.
"Automatic double-bell siphon" was invented by William Lovegrove (Greenville, S.C.), Shane Lott (Mint Hill, N.C.) and Dylan Winnberg (Southgate, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double-bell siphon for liquid flow control that improves upon existing bell siphons by the addition of an outer bell which helps the bell siphon to stop siphoning when the liquid level drops below the intended level. Optionally, a cup further enhances the ability for the siphon to stop properly."
The patent was filed on Dec. 7, 2023, under Application No. 18/532,659.
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