Flexible bags – With venting or ventilation means
Patent
1994-12-12
1996-09-24
Pascua, Jes F.
Flexible bags
With venting or ventilation means
383 44, B65D 3301
Patent
active
055584411
ABSTRACT:
A receptacle made of air-impervious sheet material which is heat-sealable at least on one face thereof. The receptacle has portions with the heat-sealable face of one portion opposed to the heat-sealable face of another. The portions are heat-sealed together forming a seal for the receptacle. The receptacle has a check valve for venting air therefrom for deflation of the receptacle while checking ingress of outside air. The check valve comprises an elongate flat tube of heat-sealable sheet material extending between the portions of the receptacle through the seal from the inside to the outside of the receptacle. The tube has opposed walls with an elongate longitudinal passage between them from one end of the tube to the other. The opposed portions of the receptacle are heat-sealed to the outside of the tube in line with the seal. The tube has material therein for inhibiting sealing together of its walls for allowing simultaneous formation of the seal and heat sealing of the portions of the receptacle to the outside of the tube.
REFERENCES:
patent: 3302859 (1967-02-01), Perry
patent: 3309006 (1967-03-01), Perry et al.
patent: 3371849 (1968-03-01), Rochla
patent: 3394871 (1968-07-01), Williams et al.
patent: 3430842 (1969-03-01), Yamaguchi
patent: 3595467 (1971-07-01), Goglio
patent: 3672915 (1972-06-01), Wiggins
patent: 3715855 (1973-02-01), Armstrong
patent: 3937396 (1976-02-01), Schneider
patent: 4166842 (1979-09-01), Sanders
patent: 4284228 (1981-08-01), Cetrelli
patent: 4470153 (1984-09-01), Kenan
patent: 4581764 (1986-04-01), Plock et al.
patent: 4672684 (1987-06-01), Barnes et al.
patent: 4674532 (1987-06-01), Koyanagi
patent: 4708167 (1987-11-01), Koyanagi
patent: 4712249 (1987-12-01), Gannon
patent: 4842007 (1989-06-01), Kurtz
patent: 4890637 (1990-01-01), Lamparter
patent: 4917646 (1990-04-01), Kieves
patent: 4949756 (1990-08-01), Melinyshyn et al.
patent: 5144708 (1992-09-01), Pekar
patent: 5209264 (1993-05-01), Koyanagi
patent: 5295892 (1994-03-01), Felton
Eckert Vernon S.
Felton Rick L.
Morrison Kenneth V.
LandOfFree
Receptacle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Receptacle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receptacle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1924372