Bottles and jars – Closures – Cap type
Patent
1982-07-06
1988-01-05
Marcus, Stephen
Bottles and jars
Closures
Cap type
215341, 215345, 215350, B65D 4116
Patent
active
047170344
ABSTRACT:
A closure for a container having generally helical threads on the neck finish is formed from a one-piece cap shell of thermoplastic material including a top wall and a peripheral skirt, the skirt having a plurality of spaced, hard, flexible generally vertical thermoplastic ribs integral with the shell for contacting the threads of the container. Each rib is so constructed and arranged that it has sufficient resistance to cold flow that it only slightly flexes and bends around the thread to form a shallow indentation on the rib when the rib is forced into contact with the thread, the indentation being sufficient to provide purchase on the threads for removing the closure.
REFERENCES:
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patent: 3270904 (1966-09-01), Foster et al.
patent: 3371813 (1968-03-01), Owen et al.
patent: 3448881 (1969-06-01), Zipper
patent: 3606062 (1971-09-01), Frisch et al.
patent: 3917100 (1975-11-01), Dukess
patent: 4000825 (1977-01-01), Westfall
patent: 4256234 (1981-03-01), Mori et al.
patent: 4308965 (1982-01-01), Dutt
patent: 4340149 (1982-07-01), Mori et al.
patent: 4379512 (1983-04-01), Ohmi et al.
Bruss H. G.
Fidei David T.
Marcus Stephen
Owens-Illinois Closure Inc.
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