Title:
PUMP-TYPE EJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/039132
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a pump-type ejection device capable of reducing foam dripping or liquid dripping with a simple configuration. In a pump-type ejection device (1) provided with a cylinder (19), a piston (31), a flow path (P) formed to penetrate the piston (31), a shaft-shaped member (36) inserted into the flow path (P), a valve body (37) formed at one end of the shaft-shaped member (36), a valve seat part (38) formed to adhere to the valve body (37) to close the flow path (P), and a protruding part (30) contacting the valve body (37) when the piston (31) moves in a direction to decrease the volume of a space (34), an immovable region (C2) that maintains a state in which the shaft-shaped member (36) is stopped with respect to the cylinder (19) and the valve body (37) and the valve seat part (38) are isolated is set so that a nozzle (11) is caused to perform suction by a negative pressure as the volume of the space (34) increases when the piston (31) is moved in a direction to increase the volume of the space (34) by a restoration mechanism (35).
Inventors:
ABE KAZUYA (JP)
YAJIMA HARUKA (JP)
YAJIMA HARUKA (JP)
Application Number:
PCT/JP2020/026443
Publication Date:
March 04, 2021
Filing Date:
July 06, 2020
Export Citation:
Assignee:
DAIWA CAN CO LTD (JP)
International Classes:
B65D47/34; B05B11/00; B65D83/00; F04B9/14
Foreign References:
| JPH1179264A | 1999-03-23 | |||
| JPH0567351U | 1993-09-07 | |||
| JPH10236507A | 1998-09-08 |
Attorney, Agent or Firm:
WATANABE, Takeo et al. (JP)
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