Piston structure of pumping type cosmetic container

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United States of America Patent

PATENT NO 9861176
SERIAL NO

14907201

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Importance

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Abstract

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A piston structure of a pumping-type cosmetic container. The piston structure includes two pistons which come into close contact with an inner wall of a container body and are overlapped. During a pumping operation, a first piston firstly ascends to a certain section and then lifts up a second piston located on the lower part thereof such that the first piston and the second piston ascend together; thus, it is possible to reduce the volume taken up by the pistons when the contents are initially filled, while the thickness for a normal operation of the pistons is still maintained, so that relatively more contents for the same volume can be filled in the same container.

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Patent Owner(s)

Patent OwnerAddress
YONWOO CO LTDINCHEON 404-250

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jung, Shin-Bok Incheon, KR 14 66

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