Bottles and jars – Closures – Cap type
Patent
1977-02-15
1978-10-10
Norton, Donald F.
Bottles and jars
Closures
Cap type
215340, 215354, B65D 4104
Patent
active
041192338
ABSTRACT:
In convention lug caps or pre-threaded caps to be screwed onto a threaded neck ring of a bottle or jar, it sometimes happens that the lugs or threads become hooked under the threads during application of the cap. This can lead to damage to the lugs or threads and failure of the closure. According to the invention, a lug cap or pre-threaded cap is provided with a formation such as a wall to prevent the cap being applied to the neck of the bottle when such hooking is threatened.
A combination of a bottle or jar having a neck with external threads or lugs and a closure cap having a top and depending skirt with further threads or lugs for engagement with the neck and a formation extending from the top which defines a gap between the end of the threads or lugs on the skirt and the formation such that the formation will enter the neck by pivoting movement when the skirt threads or lugs are above the threads on the neck but prevent such pivoting when there is firm hooking of th skirt threads or lugs beneath the threads on the neck.
REFERENCES:
patent: 824896 (1906-07-01), Willis
patent: 1481961 (1924-01-01), Hammer
patent: 1972280 (1934-09-01), Von Till
patent: 2404410 (1946-07-01), Smith
patent: 3516565 (1970-06-01), Hatkevich
Edwards Cyril Kenneth
Webb Edward Harry
Norton Donald F.
Thomas Hunter Limited
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