Title:
ELASTIC BLADDER PUMP
Document Type and Number:
WIPO Patent Application WO/2019/144307
Kind Code:
A1
Abstract:
An elastic bladder pump integrated with inlet and outlet check valves, comprising a bottle cap (1), an elastic bladder (2), and inlet and outlet check valves. A first annular wall (1.3) is designed on the bottle cap (1) to form an appropriately close fit with the inner wall of a third annular wall of the elastic bladder (2); a rectangular hole (1.4) or an elliptical hole is formed in the first annular wall (1.3) of the bottle cap (1) close to the bottom; two fractures (2.3) are formed on a corresponding wall of the elastic bladder (2) by cutting; the distance between the fractures (2.3) is slightly greater than the length of the rectangular hole (1.4) to form a first curtain-shaped hinge (2.5); when pressing the elastic bladder (2), liquid is discharged by opening the first curtain-shaped hinge (2.5); a curtain-shaped inlet check valve (2.7) and a spherical or needle-shaped inlet check valve (2.7) may further be integrated on the elastic bladder (2). The elastic bladder pump reduces components required by a common elastic bladder pump and provides favorable conditions for the assembly of a manipulator; when assembling the bottle cap (1) and the elastic bladder (2), the inlet and outlet check valves are also simultaneously installed, and hot fusion between the sealing surfaces of the bottle cap (1) and the elastic bladder (2) can also be completed, thereby providing a huge market advantage for expanding production and reducing costs.
Inventors:
CHUNG KING TSANG (CN)
Application Number:
PCT/CN2018/073919
Publication Date:
August 01, 2019
Filing Date:
January 24, 2018
Export Citation:
Assignee:
CHUNG KING TSANG (CN)
CHUNG KIT MING (CN)
CHUNG KIT MING (CN)
International Classes:
B65D47/34
Foreign References:
| CN203682139U | 2014-07-02 | |||
| CN101391685A | 2009-03-25 | |||
| CN102180303A | 2011-09-14 | |||
| CN103010569A | 2013-04-03 | |||
| CN105083730A | 2015-11-25 | |||
| US4564130A | 1986-01-14 | |||
| JPH0948476A | 1997-02-18 |
Attorney, Agent or Firm:
WAYNE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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