Receptacles – Closures – With closure opening arrangements for means
Patent
1974-10-11
1976-04-27
Hall, George T.
Receptacles
Closures
With closure opening arrangements for means
220268, 220277, 220359, B65D 4132
Patent
active
039529126
ABSTRACT:
Improved easy opening means for containers. Especially adapted to those used for liquids, including carbonated beverages, and permitting drinking from the container or pouring out contents. An important feature is attachment of closure to container after opening to avoid litter. Another feature is lift tab for easy opening, and with closure sealed by either a frangible adhesive sealant or by membrane sealing means. Lift tab initiates rupture of sealant, and then is pushed below container top with means to hold tab below opening so there is no interference when drinking from the can. Another closure has a small end for initial pressure release, and then whole closure hinges inwardly. Still another means comprises a slide gate with frangible membrane for sealing and for very easy opening. Optionally a pressure release button is provided to release the internal pressure before pulling the slide gate. An improved forming method for making the opening smaller than the closure where the closure is cut from the ductile metal top material. Partial use of score lines is included. Container top may be of ductile metal or of plastic for some of the designs. Primary objectives are the elimination of separate closure device that would cause litter, closure easier to open than heretofore, low cost, and no danger of a piece coming loose inside container.
REFERENCES:
patent: 2261117 (1941-11-01), Jack, Jr.
patent: 2723778 (1955-11-01), Rabak
patent: 3738526 (1973-06-01), Zundel et al.
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