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Title:
PUMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/022650
Kind Code:
A1
Abstract:
A pumping device (100), comprising a movable part and a fixed part. The movable part is capable of reciprocating relative to the fixed part, thereby dispensing, by means of a straw (30) connected to the fixed part, a product contained in a container (20). The pumping device (100) comprises elastic members (150, 250, 350, 550, 650, 850, 950, 1050); one end of each of the elastic members (150, 250, 350, 550, 650, 850, 950, 1050) is connected or supported on the movable part, and the other end of each of the elastic members (150, 250, 350, 550, 650, 850, 950, 1050) is connected or supported on the container (20), or is supported on the container (20) by means of the fixed part. The pumping device (100) having the described structure allows the elastic members (150, 250, 350, 550, 650, 850, 950, 1050) to be fabricated using plastic, and is also capable of obtain the required elasticity.

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Inventors:
DING YAOWU (CN)
Application Number:
PCT/CN2019/108976
Publication Date:
February 11, 2021
Filing Date:
September 29, 2019
Export Citation:
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Assignee:
DING YAOWU (CN)
International Classes:
B65D47/34; B05B11/00
Foreign References:
CN209535894U2019-10-25
CN209337265U2019-09-03
CN207482522U2018-06-12
CN207482522U2018-06-12
CN1576176A2005-02-09
CN103029895A2013-04-10
US5664703A1997-09-09
CN1230510A1999-10-06
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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