Title:
FOAM PUMP EMPLOYING SPRING AND PACKAGING CONTAINER
Document Type and Number:
WIPO Patent Application WO/2020/220386
Kind Code:
A1
Abstract:
A foam pump employing a spring, and a packaging container comprising the foam pump employing a spring. The foam pump employing a spring comprises a housing (1) and a pressing head (2) movably provided at an upper end of the housing (1). A foam channel (21) is provided in the pressing head (2). A spring (3) is sleeved on the foam channel (21). One end of the spring (3) abuts the pressing head (2), and the other end abuts the housing (1). During output of foam, neither a fluid nor foam contacts the spring (3), thereby preventing the spring (3) from contaminating the fluid, and preventing the spring (3) from rusting in the fluid and affecting use. An air-liquid mixing cavity (4) is provided in an upper end of the housing (1), and a liquid pump chamber (5) and an air pump chamber (6) are provided at a lower end of the same. The air-liquid mixing cavity (4) and the foam channel (21) communicate with each other, and can respectively communicate with the liquid pump chamber (5) and the air pump chamber (6). A liquid pump piston (71) and an air pump piston (72) are respectively provided in the liquid pump chamber (5) and the air pump chamber (6). The air pump piston (72) is integratedly provided on the liquid pump piston (71). A lower end of the pressing head (2) can drive an upper end of the liquid pump piston (71). The packaging container comprises a container for accommodating a fluid, and the foam pump employing a spring. The housing (1) is mounted on the container. The liquid pump chamber (5) and the air pump chamber (6) extend into the container.
Inventors:
ZHANG GUOJIN (CN)
Application Number:
PCT/CN2019/086065
Publication Date:
November 05, 2020
Filing Date:
May 08, 2019
Export Citation:
Assignee:
ZHUHAI ZHIRUN CARE PRODUCT CO LTD (CN)
International Classes:
B65D47/34; B05B11/00
Foreign References:
| CN101284591A | 2008-10-15 | |||
| US20140097209A1 | 2014-04-10 | |||
| EP1537916A1 | 2005-06-08 | |||
| US8561849B1 | 2013-10-22 |
Attorney, Agent or Firm:
GUANGZHOU THREE-RING PATENT AGENT CO.,LTD (CN)
Download PDF:
Previous Patent: BUILDING RAINWATER HARVESTING AND ECOLOGICAL UTILIZATION SYSTEM
Next Patent: SQUEEZING FOAM PUMP AND PACKAGING CONTAINER
Next Patent: SQUEEZING FOAM PUMP AND PACKAGING CONTAINER