US 12,168,864 B2
One-piece toilet with flush valve
Daniel N. Halloran, Fredonia, WI (US); and Tony L. Lambert, Sheboygan, WI (US)
Assigned to Kohler Co., Kohler, WI (US)
Filed by Kohler Co., Kohler, WI (US)
Filed on Mar. 15, 2022, as Appl. No. 17/695,347.
Application 17/695,347 is a continuation of application No. 16/869,936, filed on May 8, 2020, granted, now 11,306,469.
Prior Publication US 2022/0205230 A1, Jun. 30, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. E03D 1/34 (2006.01); E03D 1/33 (2006.01); E03D 11/14 (2006.01); F16K 31/18 (2006.01)
CPC E03D 1/34 (2013.01) [E03D 1/33 (2013.01); E03D 11/14 (2013.01); F16K 31/18 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A flush valve comprising:
a valve body comprising:
an inner wall disposed in an opening and extending from a first end in fluid communication with a tank to a second end in fluid communication with a fluid channel, and
a locking flange extending radially outward, wherein the locking flange is retained by a retaining structure and a bottom wall of the tank in a locking position; and
a seal disposed below the retaining structure and above the bottom wall of the tank.