US 12,291,857 B2
Water-saving siphonic toilet and equalization system therefor
Philip Hennessy, Frankford (CA); and Jerrad Hennessy, Guelph (CA)
Assigned to P & C Hennessy Holdings Inc., Frankford (CA)
Filed by P & C Hennessy Holdings Inc., Frankford (CA)
Filed on Nov. 13, 2020, as Appl. No. 17/098,051.
Claims priority of provisional application 62/934,729, filed on Nov. 13, 2019.
Prior Publication US 2021/0140162 A1, May 13, 2021
Int. Cl. E03D 9/16 (2006.01); E03D 1/30 (2006.01)
CPC E03D 9/16 (2013.01) [E03D 1/306 (2013.01); E03D 2201/30 (2013.01); E03D 2201/40 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An equalization member for a siphonic toilet having a pressurized trapway coupled with an area of pressurized air in a chamber of mixed air and water, wherein the equalization member is coupled with said pressurized trapway and chamber, the equalization member comprising:
a. a body portion for holding a volume of water;
b. a first end of the equalization member positioned above the water level in said chamber at resting state, said first end having an opening and being open to the atmosphere; and
c. a second end of the equalization member positioned below the water level in said chamber at resting state, said second end having a restricted opening to permit the timed passage of water through the equalization member, wherein the body portion is a water reservoir and the second end has a restricted opening to permit a volume of water to completely drain from the body portion of the equalization member and permit air to enter the equalization member after a pre-determined time period during a flush, which in turn allows water levels inside and outside the chamber to reach the same elevation near or at the end of the flushing cycle to ensure a full seal regardless of water volume flushed.