Receptacles – Closures – With closure opening arrangements for means
Patent
1975-02-24
1976-03-23
Price, William
Receptacles
Closures
With closure opening arrangements for means
215250, 220367, 229 7R, B65D 4102
Patent
active
039455289
ABSTRACT:
A method and means for manufacturing a plastic lid with a frangible portion to facilitate the formation of an aperture is described. In one embodiment a platen having ruled steel cutting blades mounted thereon is pressed against a plastic lid backed up by a hardened steel anvil with sufficient force to merely score the plastic lid in accordance with the pattern of the cutting blades without actually breaking through the plastic lid. The scored area which forms said frangible portion of the lid may then be easily punctured to form a straw-slot or vent opening. In another embodiment the cutting tool used comprises two cutting blades disposed on intersecting paths, each blade having a portion removed adjacent the point of intersection of said paths. In this embodiment the cutting blades are permitted to cut completely through the lid leaving a diamond-shaped weakened area in the region corresponding to the intersection of said cutting blades. This diamond-shaped portion can be easily fractured by pressing a straw or other suitable means through the lid at that point. This embodiment also provides a substantially leak-proof closure lid.
REFERENCES:
patent: 1593785 (1926-07-01), Wilson
patent: 1632412 (1927-06-01), McCrystal
patent: 2082760 (1937-06-01), Berni
patent: 2335832 (1943-11-01), Williams
patent: 2436291 (1948-02-01), Daniel
patent: 2578244 (1951-12-01), Harrison
patent: 3387765 (1968-06-01), Davis
Hart Ro E.
Maryland Cup Corporation
Price William
LandOfFree
Apertured lid and method for manufacturing same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apertured lid and method for manufacturing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apertured lid and method for manufacturing same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1638740