Dispensing – With frangible closure for outlet
Patent
1974-10-17
1976-08-31
Knowles, Allen N.
Dispensing
With frangible closure for outlet
222561, B65D 4710
Patent
active
039775780
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. One closure design has lift tab attached to the closure 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 both lift tab and closure are 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 starting rupture of sealing means, and then whole closure hinges inwardly. Still another means comprises a slide gate with frangible membrane for sealing and for very easy opening. Slide gate is non-detachable and has sharp points for easier rupture of membrane during opening. Optionally a pressure release button is provided to release 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 ductile metal including aluminum or steel, or of plastic for various forms of the invention. Primary objectives are the elimination of a 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: 117510 (1971-08-01), Brown
patent: 2274752 (1942-03-01), Straub
patent: 2320484 (1943-06-01), Straub
patent: 2590437 (1952-03-01), Maves
patent: 3703979 (1972-11-01), Douty
patent: 3843011 (1974-10-01), Perry
patent: 3856184 (1974-12-01), Luviano
Knowles Allen N.
Lane Hadd
LandOfFree
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