US 12,403,539 B2
Standpipe recirculation systems for material removal machines
Yun Zhao, Shanghai (CN); Calvin States Nelson, Grayslake, IL (US); Roland Schaffer, Gurnee, IL (US); and Timothy Weber, Vernon Hills, IL (US)
Assigned to ILLINOIS TOOL WORKS INC., Glenview, IL (US)
Appl. No. 18/022,214
Filed by ILLINOIS TOOL WORKS INC., Glenview, IL (US)
PCT Filed Sep. 16, 2020, PCT No. PCT/CN2020/115577
§ 371(c)(1), (2) Date Feb. 20, 2023,
PCT Pub. No. WO2022/056723, PCT Pub. Date Mar. 24, 2022.
Prior Publication US 2023/0311221 A1, Oct. 5, 2023
Int. Cl. B23D 59/02 (2006.01); B01D 17/02 (2006.01); B23Q 11/10 (2006.01)
CPC B23D 59/02 (2013.01) [B01D 17/0208 (2013.01); B23Q 11/1069 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A recirculation system for a material removal machine, comprising:
a first reservoir having an opening and a floor with a drain;
a removable lid shaped to conform to the opening in the first reservoir, the removable lid having a lid inlet, such that fluid can flow into the first reservoir through the lid inlet from a cabinet outlet of a material removal cabinet housing the material removal machine;
a second reservoir in fluid communication with the first reservoir through the drain; and
a standpipe having walls that form a border around the drain within the first reservoir, the walls extending upwards away from the floor to a first height, such that fluid that accumulates on the floor within the first reservoir is blocked from flowing through the drain into the second reservoir until a top of the fluid in the first reservoir exceeds the first height.