Title:
DISCHARGE PUMP
Document Type and Number:
WIPO Patent Application WO/2019/026542
Kind Code:
A1
Abstract:
This discharge pump (2) is provided with: a stationary suction part (A) which is equipped with a cylinder (A1) having a first check valve (V1) provided to a lower part thereof and a mounting member (A3) to be mounted to the neck part of a container; and an actuating member (B) which is equipped with a discharge head (B4), a stem (B2), a piston guide (B1) and an annular piston (B3), and which has a second check valve (V2) formed between the lower end of the annular piston and the lower part of the piston guide, wherein provided to a part where the stem and the piston guide are fitted to each other is an engagement means (E) to restrict the stem and the piston guide from rotating in an un-engaged manner with respect to each other when the actuating member is unscrewed and lifted from the stationary suction part.
Inventors:
ISHIZUKA TETSUYA (JP)
Application Number:
PCT/JP2018/025686
Publication Date:
February 07, 2019
Filing Date:
July 06, 2018
Export Citation:
Assignee:
YOSHINO KOGYOSHO CO LTD (JP)
International Classes:
B65D47/34; B05B11/00; F04B9/14
Foreign References:
| JP2015085990A | 2015-05-07 | |||
| JP2015105117A | 2015-06-08 | |||
| US5794821A | 1998-08-18 | |||
| JP2015163523A | 2015-09-10 | |||
| JP2017147400A | 2017-08-24 | |||
| JP2013163523A | 2013-08-22 |
Other References:
See also references of EP 3663225A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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