Title:
PISTON ASSEMBLY FOR PUMP AND PUMP
Document Type and Number:
WIPO Patent Application WO/2018/082155
Kind Code:
A1
Abstract:
A piston assembly (1) for a pump, and a pump. The piston assembly (1) comprises: an airbag (11) and a movable connecting bracket (12). The airbag (11) comprises: a base tray (111), a bag body (112), and a sleeve tube (113), the base tray (111) and the sleeve tube (113) respectively being positioned on two opposite sides of the bag body (112), an air cavity (1120) being defined inside the bag body (112), the side of the air cavity (1120) facing the base tray (111) being penetrated to form an opening (1122), and the bottom wall of the air cavity (1120) being provided with a first through hole (1121) in communication with the sleeve tube (113). A connecting support leg (121) is provided on the connecting bracket (12), a second through hole (1211) being disposed on the connecting support leg (121), the connecting support leg (121) extending into the sleeve tube (113); when the connecting bracket (12) moves, the second through hole (1211) and the first through hole (1121) can alternately communicate and disconnect.
Inventors:
DONG ZHENKAI (CN)
QUE PEITAO (CN)
QUE PEITAO (CN)
Application Number:
PCT/CN2016/109068
Publication Date:
May 11, 2018
Filing Date:
December 08, 2016
Export Citation:
Assignee:
XIAMEN KOGE MICRO TECH CO LTD (CN)
International Classes:
F04B45/047; A61B5/022
Foreign References:
| JP2003056467A | 2003-02-26 | |||
| JP2005146942A | 2005-06-09 | |||
| US20030031571A1 | 2003-02-13 | |||
| CN1869444A | 2006-11-29 | |||
| JP2015004318A | 2015-01-08 | |||
| JP2009180155A | 2009-08-13 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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