US 11,807,427 B2
Double container pouring cap and double container
Satoshi Sakamoto, Tokyo (JP); Ryo Tachikura, Tokyo (JP); and Katsuhito Kuwahara, Tokyo (JP)
Assigned to YOSHINO KOGYOSHO CO., LTD., Tokyo (JP)
Appl. No. 17/623,089
Filed by YOSHINO KOGYOSHO CO., LTD., Tokyo (JP)
PCT Filed Jun. 26, 2020, PCT No. PCT/JP2020/025388
§ 371(c)(1), (2) Date Dec. 27, 2021,
PCT Pub. No. WO2020/262672, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-120735 (JP), filed on Jun. 28, 2019; and application No. 2019-140360 (JP), filed on Jul. 30, 2019.
Prior Publication US 2022/0258931 A1, Aug. 18, 2022
Int. Cl. B65D 47/20 (2006.01); B65D 47/32 (2006.01)
CPC B65D 47/2018 (2013.01) [B65D 47/32 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A double container pouring cap attached to a container body including an inner layer body having a filling space that accommodates content liquid and an outer layer body partitioning an inner space between the inner layer body and the outer layer body and including a vent that leads to the internal space, and pours out the content liquid in the filling space by pressing the outer layer body from a pouring outlet,
the double container pouring cap comprising:
a cap body covering the vent and attached to the outer layer body, and including the pouring outlet and an outside air inlet that leads to the vent;
an air valve that can abut on and separate from a back surface of the cap body, and blocks air flow from the vent to the outside air inlet, while allowing air flow from the outside air inlet to the vent; and
an inner plug provided to face the back surface of the cap body with the air valve interposed between, and including a regulation part that abuts on a part of the air valve and limits separation of the air valve from the back surface of the cap body, wherein
a first abutting surface of the air valve where the regulation part abuts is a flat surface,
the air valve includes a tubular base part, a donut plate-shaped and elastically deformable air valve body part having an inner edge fixedly supported by the base part, and an air valve outer edge part provided on an outer edge side of the air valve body part and having the first abutting surface on a side that faces the regulation part and a second abutting surface that abuts on the back surface of the cap body on a side that faces the back surface of the cap body,
the air valve outer edge part includes an upper portion projecting upward and an outer end portion, wherein the outer end portion is provided on an outer edge of the upper portion and extends radially outwardly, wherein a lower surface of the outer end portion is a flat surface,
the first abutting surface includes the lower surface of the outer end portion,
the second abutting surface is the top of the upper portion, and
at least a portion of the first abutting surface is in contact with the regulation part radially outside of the second abutting surface.