US 12,329,307 B2
Additive delivery systems and containers
Garrett S. Waggoner, Tampa, FL (US); Andrew Gay, Tampa, FL (US); and Christopher Jasperse, Pittsburgh, KS (US)
Assigned to Cirkul, Inc., Tampa, FL (US)
Filed by Cirkul, Inc., Tampa, FL (US)
Filed on Dec. 1, 2021, as Appl. No. 17/539,833.
Application 17/539,833 is a continuation of application No. 15/791,348, filed on Oct. 23, 2017, granted, now 11,213,159.
Application 15/791,348 is a continuation of application No. 14/181,354, filed on Feb. 14, 2014, granted, now 9,795,242.
Claims priority of provisional application 61/764,861, filed on Feb. 14, 2013.
Prior Publication US 2022/0175174 A1, Jun. 9, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A47J 31/00 (2006.01)
CPC A47J 31/005 (2013.01) 25 Claims
OG exemplary drawing
 
1. An additive delivery system for use with a portable liquid container configured to hold a base liquid, the system comprising:
a base liquid container having an inner volume to hold the base liquid, a bottom and a threaded mouth;
an additive reservoir including at least one wall defining a space holding a liquid additive and an outlet from which the liquid additive exits the additive reservoir;
a cap assembly configured to threadedly engage with the threaded mouth, the cap assembly having a bottom, a top, a spout at the top of the cap assembly and configured for movement between open and closed positions to control flow of liquid from the spout, an upper component coupled to the additive reservoir, and a lower component including at least one wall that at least partially defines an additive reservoir enclosure in which the additive reservoir is received, the lower component including an opening and configured to permit the base liquid from the inner volume to flow into the opening and through the additive reservoir enclosure, and a metering port configured to receive liquid additive from the outlet of the additive reservoir; and
a base liquid flow path extending through the cap assembly to the spout, the base liquid flow path fluidly coupled to receive liquid additive from the metering port at a mixing area to mix the liquid additive with the base liquid and including a one-way valve in the base liquid flow path upstream of the mixing area that prevents backflow of the base liquid into the base liquid container.