Title:
PUMP ASSEMBLY AND CONTAINER HAVING CONTENT EVACUATION FUNCTION
Document Type and Number:
WIPO Patent Application WO/2020/147659
Kind Code:
A1
Abstract:
Disclosed are a pump assembly and a container having content evacuation function. The pump assembly (90), adapted to be mounted on a container body, comprises a pump main body (1) and a pressing rod (2). The pressing rod (2) is provided with a rod body (20) and a piston portion (21); the pump main body (1) is provided with a first cavity (1a); the rod body (20) slidably penetrates into the first cavity (1a), and one end of the rod body (20) extends out of the first cavity (1a); the piston portion (21) is connected to the rod body (20), and is located in the first cavity (1a) so as to divide the first cavity (1a) into a first air cavity (12a) and a second air cavity (12b), the first air cavity (12a) and/or the second air chamber (12b) being sealed. The piston portion (21) can rebound under the action of combined force of air pressure in the first air chamber (12a) and air pressure in the second air chamber (12b) so as to drive the rod body to rebound, there is no need to arrange a spring in the pump main body for rebounding of the rod body. Hence, the pump assembly can be made entirely of plastic materials without mixing of metal materials, thereby making the pump assembly easy to recycle. The container having content evacuation function includes the described pump assembly.
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Inventors:
ZHU WEI (CN)
Application Number:
PCT/CN2020/071433
Publication Date:
July 23, 2020
Filing Date:
January 10, 2020
Export Citation:
Assignee:
NUBIZ PLASTIC NANTONG CO LTD (CN)
International Classes:
B65D47/30; B65D83/16
Foreign References:
| CN109649819A | 2019-04-19 | |||
| CN209366849U | 2019-09-10 | |||
| CN209650898U | 2019-11-19 | |||
| CN110155489A | 2019-08-23 | |||
| CN210140105U | 2020-03-13 | |||
| CN1159416A | 1997-09-17 | |||
| CN1159416A | 1997-09-17 | |||
| CN104058163A | 2014-09-24 | |||
| CN101045226A | 2007-10-03 | |||
| CN2490102Y | 2002-05-08 | |||
| JPH09301453A | 1997-11-25 | |||
| US20070164055A1 | 2007-07-19 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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