Title:
REVERSE-FLOW PREVENTION PLUG FOR CONTAINER, THE CONTAINER, AND POURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2004/022444
Kind Code:
A1
Abstract:
A reverse-flow prevention plug for a container, the container, and a pouring device, where a container main body and a plug member are made separate bodies and formed in simple shapes, and a reverse-flow prevention function is enhanced by strengthening the contacting capability between the plug member and an elastic member. A reverse-flow prevention plug (4) includes an elastic film body (7), made of thin film, forming a flow passage having an inflow opening (9c) and a discharge opening (6), and includes a ball-like plug member (8) that is retained in a flow passage of the elastic film body (7) and on which a spherical seal face (12) is formed. The spherical seal face is in elastically close contact with an intermediate portion of the elastic film body (7) and prevents a fluid body from flowing. A container (1) has a reverse-flow prevention plug (4) installed on a container mouth portion (2) of the container main body (3). A pouring device (43) is provided with a container holder (47) that receives and holds the container (1) and allows the container main body (3) to be pressed from the container mouth portion (2) side to contract and deform the container main body (3).
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Inventors:
MIYAZAKI MASAYASU (JP)
IKUTA MANABU (JP)
IKUTA MANABU (JP)
Application Number:
PCT/JP2003/010365
Publication Date:
March 18, 2004
Filing Date:
August 14, 2003
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
MIYAZAKI MASAYASU (JP)
IKUTA MANABU (JP)
MIYAZAKI MASAYASU (JP)
IKUTA MANABU (JP)
International Classes:
B65D25/20; B65D25/42; B65D33/36; B65D35/50; B65D39/06; B65D47/20; B65D83/00; A61F9/00; (IPC1-7): B65D47/20
Foreign References:
| US4846810A | 1989-07-11 | |||
| JPS4997245U | 1974-08-22 | |||
| US5005732A | 1991-04-09 | |||
| US6286725B1 | 2001-09-11 |
Other References:
See also references of EP 1538099A4
Attorney, Agent or Firm:
Yasuda, Toshio (7 & 6th Floor Shori Building, 7-19,
Takaida-hondori 7-chom, Higashi-Osaka-shi Osaka, JP)
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