US 12,404,683 B2
Elevator trench drain
David M. Gomo, Lake City, PA (US); Robert A. DiPlacido, Erie, PA (US); Jaroslaw J. Plachotnik, Jamestown, NY (US); and Jason E. Morris, Erie, PA (US)
Assigned to ZURN WATER, LLC, Milwaukee, WI (US)
Filed by ZURN WATER, LLC, Milwaukee, WI (US)
Filed on Apr. 28, 2023, as Appl. No. 18/309,656.
Application 18/309,656 is a continuation of application No. 17/228,448, filed on Apr. 12, 2021, granted, now 11,674,320.
Application 17/228,448 is a continuation of application No. 16/780,623, filed on Feb. 3, 2020, granted, now 10,975,583, issued on Apr. 13, 2021.
Application 16/780,623 is a continuation of application No. 16/271,324, filed on Feb. 8, 2019, granted, now 10,570,628, issued on Feb. 25, 2020.
Application 16/271,324 is a continuation of application No. 15/689,896, filed on Aug. 29, 2017, granted, now 10,240,351, issued on Mar. 26, 2019.
Application 15/689,896 is a continuation of application No. 15/262,179, filed on Sep. 12, 2016, granted, now 9,777,489, issued on Oct. 3, 2017.
Claims priority of provisional application 62/298,159, filed on Feb. 22, 2016.
Prior Publication US 2023/0265664 A1, Aug. 24, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E04F 17/00 (2006.01); B66B 13/30 (2006.01); E03F 5/04 (2006.01); E03F 5/06 (2006.01)
CPC E04F 17/00 (2013.01) [B66B 13/301 (2013.01); E03F 5/0407 (2013.01); E03F 5/06 (2013.01); E03F 2005/061 (2013.01); E04F 17/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A trench drain comprising:
a trench including a base wall, a first wall extending from the base wall, and a second wall extending from the base wall, the base wall, the first wall, and the second wall at least partially defining a trench volume therein, the trench having a trench height, a trench length, and a trench width, the trench length is greater than the trench width, and the trench length is at least 60 times the trench height;
a drain passageway extending through the base wall and including a distal end opposite the base wall, the distal end having an outlet, the outlet having an inner diameter that is no greater than 4 inches; and
a grate at least partially positionable within the trench volume, the grate configured to allow fluid to pass therethrough.