US 12,234,166 B2
Dispensing cartridge alert
Eric Barton, Eden Prairie, MN (US); Jeffrey D. Johnson, Edina, MN (US); and Darrin M Swagel, Minnetonka, MN (US)
Assigned to King Technology, Inc., Minnetonka, MN (US)
Filed by King Technology Inc., Hopkins, MN (US)
Filed on Sep. 9, 2022, as Appl. No. 17/941,495.
Claims priority of provisional application 63/360,215, filed on Sep. 14, 2021.
Prior Publication US 2023/0357060 A1, Nov. 9, 2023
Int. Cl. C02F 1/68 (2023.01)
CPC C02F 1/68 (2013.01) [C02F 1/685 (2013.01); C02F 2201/006 (2013.01); C02F 2209/445 (2013.01)] 21 Claims
OG exemplary drawing
 
18. A method of date marking a cartridge dispenser for replacement when a dispersant in the cartridge dispenser has a predetermined water life comprising;
placing a first circumferential date band on an outer surface of a container where the container has a compartment for the dispersant of predetermined life and a set of ports for water access to the dispersant therein:
placing a second circumferential date band on the outer surface of the container;
placing a rotatable sleeve having a first viewing port and a second viewing port around the container;
rotating the sleeve until the first viewing port exposes a date on the first circumferential band as the date the cartridge dispenser is placed into a body of water and the second viewing port exposed a further date; and
using the date in the second viewing port as the date the cartridge dispenser should be replaced.