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US 4,394,919 AGranted
Closure for container
AssigneeCutter Laboratories, Inc.
InventorsRaymond D. von Alven, Lee E. McGill
Life of this patent
Estimating the term…
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AssigneeCutter Laboratories, Inc.
InventorsRaymond D. von Alven, Lee E. McGill
Estimating the term…
A closure for containers which is inexpensively and easily manufactured and is readily removeable in whole or in part to gain access to contents in the container. The closure comprises a generally flat cap member sealed at its periphery to the mouth of the container. An upstanding tubular member on the surface of the cap is partially surrounded by a score line in the cap and the score line preferably continues all around the cap near its periphery. The tubular member preferably has rigidifying means in its closed top and side walls which can be readily flexed inwardly so that the tubular member can be firmly grasped and pulled to readily initiate a rupture in the score line at a stress-concentrating focal point on that portion of the score line adjacent the tubular member. The cap can then be easily removed by continued pulling of the tubular member.
A closure for a container for sealing the neck of the container comprising a generally flat cap hermetically sealed to the neck, a score line in a surface thereof, a tear-initiating means associated with the score line which comprises a hollow tubular member extending upwardly from the top surface of the cap and adapted for initiating a rupture of the score line at a stress-concentrating locus on the score line, said tubular member having a generally flat closed outer end and an open inner end which coincides with an opening in the surface of the cap, and said tubular member having a generally oval cross-section, said oval cross-section defining a major axis and a minor axis.
A container with a closure for enclosing the neck on the container, the closure comprising a generally flat cap which extends across the neck and having an outer portion which is sealed to the rim on the neck, a first score line in the cap generally parallel to and extending adjacent to the entire sealed outer portion;
Dependencies are inferred from the claim text.