US 12,213,632 B2
Dispensing system with material level detector
Jackson William Wegelin, Stow, OH (US); Nick Ermanno Ciavarella, Seven Hills, OH (US); Scott Theodore Proper, Stow, OH (US); and Richard E. Corney, Akron, OH (US)
Assigned to GOJO Industries, Inc., Akron, OH (US)
Filed by GOJO Industries, Inc., Akron, OH (US)
Filed on Dec. 20, 2021, as Appl. No. 17/556,297.
Application 15/918,241 is a division of application No. 14/620,149, filed on Feb. 11, 2015, granted, now 9,913,562, issued on Mar. 13, 2018.
Application 17/556,297 is a continuation of application No. 15/918,241, filed on Mar. 12, 2018, granted, now 11,202,535.
Claims priority of provisional application 61/938,643, filed on Feb. 11, 2014.
Prior Publication US 2022/0183511 A1, Jun. 16, 2022
Int. Cl. A47K 5/12 (2006.01)
CPC A47K 5/1217 (2013.01) [A47K 5/1202 (2013.01); A47K 5/1211 (2013.01); A47K 2005/1218 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining a remaining service interval of a dispensing system reservoir, comprising:
determining a corrected average usage rate for a dispensing system by monitoring a number of dispersions over a period of time;
detecting a real time amount of fluid product in the dispensing system reservoir by detecting a first change from a first amount of fluid product in the dispensing system reservoir to a second amount of the fluid product in the dispensing system reservoir; and
determining the remaining service interval of the dispensing system reservoir based upon the corrected average usage rate and the real time amount of the fluid product in the dispensing system reservoir.