Bottles and jars – Closures – Cap type
Patent
1978-08-21
1981-03-24
Hall, George T.
Bottles and jars
Closures
Cap type
215318, 215320, 215321, 215331, B65D 4106, B65D 4136
Patent
active
042575265
ABSTRACT:
A plastic closure having inner pressure sealing skirt and outer finish engaging skirt has a plurality of fingers evenly spaced around the inner side of the outer skirt. The corresponding finish has a like plurality of indentations evenly spaced around its circumference for engagement by the fingers when the cap is applied. The indentations may be in the form of recesses spaced from the bottle mouth, having a horizontal lip at the top edge, and having a side wall smoothly merging with the outer surface of the finish at the side of the recess. Alternatively, the recess may be a bayonet groove spiraling downwardly on the finish and then bending into a horizontal or upwardly spiraling groove for locking the fingers in place against pressure in the bottle. Another embodiment would employ a groove spiraling downwardly on the finish at a first depth, and then terminating in a groove portion of a second greater depth. The latter finish cooperates with a closure finger structure having a base of similar thickness to the first depth of the groove, and a boss on the base is adapted to enter the deeper groove portion and accordingly is of correspondingly greater thickness. The inner skirt of the closure forms an improved seal when its outer face is cylindrical or frusto-conical in an outward and downward flare, and the finish has a frusto-conical, downwardly converging camming surface immediately within the bottle mouth.
REFERENCES:
patent: 942141 (1909-12-01), Hoffman
patent: 3344942 (1967-10-01), Hedgewick
patent: 3410460 (1968-11-01), Musher
patent: 3927783 (1975-12-01), Bogert
patent: 4057160 (1977-11-01), Victor
Pearce Ronald A.
Pennington Norman G.
Weits Ferdinand
Coors Container Company
Hall George T.
Rost Kyle W.
LandOfFree
Bottle closure and finish does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bottle closure and finish, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bottle closure and finish will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2405643