Receptacles – Closures – Superposed closures for common opening
Patent
1995-06-07
1997-12-02
Cronin, Stephen
Receptacles
Closures
Superposed closures for common opening
220257, 220258, 220276, 220371, 220373, 426106, 426115, 426395, 426397, 215261, 206508, 206509, B65D 5118
Patent
active
056926340
ABSTRACT:
Rigid container structure for hermetic sealing of particulate solids which emit an off-gas during containment. Provisions are made for enclosing chamber space with a gas-permeable imperforate membrane film so as to selectively separate and retain an off-gas out of contact with container contents. In a specific embodiment, carbon dioxide is selectively separated from coffee contents while the entire container, including such enclosed chamber as established, is hermetically sealed from ambient atmosphere. Provision is also made for venting of a separated off-gas in initiating a rupture of an end closure structure prior to full opening of the container. That arrangement further diminishes the opportunity for inadvertent discharge of particulate solids due to expulsion of gas from inert gas purging and from gas emitted during hermetic sealing.
REFERENCES:
patent: 3409160 (1968-11-01), Scott
patent: 4842875 (1989-06-01), Anderson
patent: 4966780 (1990-10-01), Hargraves et al.
patent: 5045331 (1991-09-01), Antoon, Jr.
patent: 5322701 (1994-06-01), Cullen et al.
patent: 5344662 (1994-09-01), Payne et al.
patent: 5515994 (1996-05-01), Goglio
Dalrymple William H.
Jenkins Leonard A.
Cronin Stephen
Weirton Steel Corporation
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