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Title:
FOOD CONTAINER SEALING COVER HAVING INNER PRESSURE RELEASING FUNCTION
Document Type and Number:
WIPO Patent Application WO/2012/053734
Kind Code:
A1
Abstract:
The present invention relates to a food container sealing cover having an inner pressure releasing function. An object of the present invention is to easily remove a cover even when the inner pressure of a container is lower than atmospheric pressure, by installing a valve device on the cover. Another object of the present invention is to automatically release high pressure within the container by installing the valve device on the cover. To this end, a valve device (300) of a sealing cover according to the present invention comprises an elevating guide part (310), an upper valve body (320), an O-ring (330), a lower valve body (340), and a poppet valve unit (400). The elevating guide part (310) includes a cylindrical wall and a plurality of exhaust recesses (311). The cylindrical wall is disposed in the central portion of a cover main body (31), and has upper and lower openings. The exhaust recesses (311) are in an inner wall of the elevating guide part (310), and vertically extend from the uppermost end of the inner wall of the elevating guide part (310) to the middle thereof. The upper valve body (320) includes an upper hollow shaft part (321) and a flange type handle part (322). The upper hollow shaft part (321) has a stepped bottom edge and a lower end that is vertically movable within the elevating guide part (310). The flange type handle part (322) is disposed on the upper portion of the upper hollow shaft part (321) exposed to the upper side of the cover main body (31), and has a valve hole (324) passing through the central portion thereof. The O-ring (330) is disposed at the stepped bottom edge of the upper valve body (320), and tightly contacts the inner wall of the elevating guide part (310). In addition, the O-ring (330) is positioned at the upper or middle portion of the inner wall of the elevating guide part (310) according to an upward or downward movement of the upper valve body (320), so as to selectively open or close the exhaust recesses (311). The lower valve body (340) includes a lower shaft part (341) and a stopper part (342). The lower shaft part (341) is disposed at the lower side of the cover main body (31), and is coupled to a bottom edge of the upper hollow shaft part (321) of the upper valve body (320) to vertically move together with the upper hollow shaft part (321). A certain gap is maintained between the lower shaft part (341) and the inner wall of the elevating guide part (310). The stopper part (342) has a flange shape at the lower end of the lower shaft part (341), so that the stopper part (342) can be caught by a lower surface of the cover main body (31). The poppet valve unit (400) is disposed within the valve hole (324) of the upper valve body (320) to open the valve hole (324) according to inner pressure of a food container (10).

Inventors:
IM SANG MAN (KR)
Application Number:
KR2011/005761
Publication Date:
April 26, 2012
Filing Date:
August 08, 2011
Export Citation:
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Assignee:
IM SANG MAN (KR)
International Classes:
B65D51/16; B65D43/04; B65D53/02; B65D81/20
Foreign References:
KR200253340Y12001-11-22
KR100648004B12006-11-23
KR200358108Y12004-08-05
KR20090006407U2009-06-29
KR200447444Y12010-01-26
Attorney, Agent or Firm:
TAEDONG INTERNATIONAL PATENT LAW FIRM (KR)
특허법인 태동 (KR)
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Claims: