US 11,852,247 B2
Outlet valve arrangements for enhanced pump efficiency
John J. McNulty, Broadview Heights, OH (US); Donald R. Harris, Cuyahoga Falls, OH (US); Nick E. Ciavarella, Seven Hills, OH (US); Daniel M. Willis, Clinton, OH (US); and Aaron D. Marshall, Uniontown, OH (US)
Assigned to GOJO Industries, Inc., Akron, OH (US)
Filed by GOJO Industries, Inc., Akron, OH (US)
Filed on Jul. 28, 2021, as Appl. No. 17/387,186.
Application 17/387,186 is a continuation of application No. 16/282,462, filed on Feb. 22, 2019, granted, now 11,079,022.
Claims priority of provisional application 62/637,487, filed on Mar. 2, 2018.
Prior Publication US 2021/0356046 A1, Nov. 18, 2021
Int. Cl. F16K 1/30 (2006.01); A47K 5/14 (2006.01); B05B 11/00 (2023.01); A47K 5/12 (2006.01); F16K 15/18 (2006.01); B05B 11/10 (2023.01)
CPC F16K 1/307 (2013.01) [A47K 5/1207 (2013.01); A47K 5/1208 (2013.01); A47K 5/14 (2013.01); B05B 11/0075 (2013.01); B05B 11/1023 (2023.01); F16K 15/1826 (2021.08); B05B 11/0062 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dispenser comprising:
a housing;
an actuator located within the housing;
a holder for holding a container of soap, sanitizer or lotion;
a sequentially activated multi-diaphragm pump having a plurality of pump chambers;
the pump having an inlet, the plurality of pump chambers, and an outlet;
a first outlet valve located downstream of at least one of the plurality of pump chambers;
a second outlet valve located downstream of the first outlet valve;
a conduit located between the first outlet valve and the second outlet valve; and
an outlet nozzle;
wherein, during a selected dispensing time, the first outlet valve cycles open and closed at least two times for every time the second outlet valve cycles open and closed.