Title:
CHECK VALVE FOR VACUUM CONTAINER AND VACUUM CONTAINER LID USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/129793
Kind Code:
A1
Abstract:
Disclosed is a check valve which has an excellent sealing force compared with a conventional one by applying a relatively small force which lifts the edge of a valve body part even with a vacuum indicating part being sunk, and which can maintain a vacuum state for a longer time by preventing a ring shape from being dented at a low or high vacuum level. The check valve has features including: a valve body part which is made of an elastic material, is provided with a concave part for providing on the bottom surface thereof an empty space higher than the edge thereof, and has a through-hole vertically formed therein; a vacuum indicating part which is connected integrally to the valve body part along the inner wall surface of the through-hole at a position spaced downwardly from the top of the through-hole, is formed to be thinner than the thickness of the valve body part and protrude upwardly, and sinks toward a lid when negative pressure is generated in the space between the lid and the valve body part; and a fixing part which is coupled to a valve coupling part so as to fix the valve body part to the valve coupling part.
Inventors:
PARK SOU KYU (KR)
Application Number:
PCT/KR2014/001333
Publication Date:
August 28, 2014
Filing Date:
February 19, 2014
Export Citation:
Assignee:
BORU INTERNAT CO LTD (KR)
International Classes:
B65D51/16; B65D81/20; F16K15/14
Foreign References:
| KR20080014536A | 2008-02-14 | |||
| KR200448655Y1 | 2010-05-06 | |||
| KR20100078576A | 2010-07-08 | |||
| JP2003200956A | 2003-07-15 |
Other References:
See also references of EP 2960176A4
Attorney, Agent or Firm:
PARK, HEEJIN (KR)
박희진 (KR)
박희진 (KR)
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