Bottles and jars – Closures – Having warning means or means impeding closure removal
Patent
1975-08-22
1976-06-15
Hall, George T.
Bottles and jars
Closures
Having warning means or means impeding closure removal
215217, 215295, 215305, 215365, B65D 5502, B65D 8556, A61J 100
Patent
active
039631397
ABSTRACT:
A tamper-indicating closure combination consisting of a container having a circular neck and a twist-on cap therefor. The container neck has external interrupted thread sections with ratchet teeth on their under surfaces. The cap has similar, cooperating internal thread sections on the inner surface of its skirt with ratchet teeth on their upper surfaces. When the cap is turned onto the neck, the sets of ratchet teeth interengage and lock the cap against retrograde rotation. The cap also has a puller which is connected to the cap, a first section thereof being connected by frangible portions and a second section thereof being connected permanently to said cap. In order to remove the cap, the puller is broken away at the first section and then is pulled upwardly and outwardly relative to the container neck to disengage the cooperating sets of ratchet teeth. The cap is replaced by turning it onto the bottle neck for re-engaging the cooperating threads and ratchet teeth. The fact that one end of the puller is disconnected indicates that the container has been opened. The closure combination also can be so proportioned that the force necessary, first to break the frangible connections between the puller and the cap and, afterwards, to pull the cap up and away to disengage the cooperating ratchet teeth in order to remove the cap, results in the closure combination also being child-resistant.
REFERENCES:
patent: 3820678 (1974-06-01), Zipper et al.
patent: 3888376 (1975-06-01), Cooke
patent: 3902621 (1975-09-01), Hidding
Hall George T.
Leonard Henry K.
Sunbeam Plastics Corporation
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