Special receptacle or package – Evacuated
Patent
1998-03-18
1999-12-07
Gehman, Bryon P.
Special receptacle or package
Evacuated
220375, 383 3, 383 59, 383 66, 383103, B65D 8120, B65D 3301, B65D 3900
Patent
active
059968001
ABSTRACT:
A pair of thin, flexible, plastic panels are secured to one another at preselected peripheral edges to define a plastic bag and an auxiliary panel having an aperture formed in it is attached at its peripheral edges to an exterior side of a preselected panel of the pair of panels to form an auxiliary chamber. An aperture is also formed in the preselected panel in substantial registration with the aperture formed in the auxiliary panel and a valve head of a valve member is disposed between the apertures. In its position of repose, the valve head overlies the aperture formed in the preselected panel and underlies the aperture formed in the auxiliary panel. A valve neck is formed integrally with the valve head and is secured to the exterior side of the preselected panel so that it allows air being forced out of the bag to lift the valve head from the aperture formed in the exterior side of the preselected panel. The valve head returns to its position of repose when the air is no longer being forced out of the bag and the air in the auxiliary chamber escapes into the atmosphere through the aperture formed in the auxiliary panel. In a second embodiment, the valve neck and head are formed integrally with the auxiliary panel. In a third embodiment, an imperforate plug frictionally engages a socket that encircles an aperture formed in a base that is secured to the bag, and the aperture in the base is in registration with an aperture formed in the bag.
REFERENCES:
patent: 1769259 (1930-07-01), Henry
patent: 2200395 (1940-05-01), Lobl
patent: 2638263 (1953-05-01), Jesnig
patent: 3946780 (1976-03-01), Sellers
patent: 3980226 (1976-09-01), Franz
patent: 4262801 (1981-04-01), Avery
patent: 5035516 (1991-07-01), Pacheco
patent: 5121840 (1992-06-01), Schram
patent: 5240112 (1993-08-01), Newburger
patent: 5450963 (1995-09-01), Carson
Gehman Bryon P.
Smith Ronald E.
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