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Title:
PLASTIC SPRING, PUMP CORE, EMULSION PUMP, AND PRESS-TYPE PACKAGING CONTAINER
Document Type and Number:
WIPO Patent Application WO/2022/126501
Kind Code:
A1
Abstract:
A plastic spring, a pump core, an emulsion pump, and a press-type packaging container. The plastic spring comprises at least one spring unit, and each spring unit comprises a first support member, a second support member, and at least two torsion arms. The at least two torsion arms are disposed between the first support member and the second support member, and two ends of each torsion arm are respectively connected to the first support member and the second support member; each torsion arm comprises at least one vertical segment, and one end of each vertical segment is connected to the first support member or the second support member.

Inventors:
CHEN JIABIN (CN)
Application Number:
PCT/CN2020/137233
Publication Date:
June 23, 2022
Filing Date:
December 17, 2020
Export Citation:
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Assignee:
YUYAO CAIYUN COSMETICS PACKAGING CO LTD (CN)
International Classes:
F16F1/377
Domestic Patent References:
WO2020156935A12020-08-06
Foreign References:
CN107264970A2017-10-20
CN111907914A2020-11-10
KR20130041586A2013-04-25
CN109027080A2018-12-18
CN105673748A2016-06-15
EP1914440A12008-04-23
Other References:
See also references of EP 4206487A4
Attorney, Agent or Firm:
HANGZHOU YUYANG UNIONPATENT AGENCY CO., LTD. (CN)
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