Releasable locking system

Details Releasable locking system Releasable locking system

1977-06-06

1982-03-23

Shoap, Allan N.

Bottles and jars

Closures

With pressure-responsive valve

215217, 215342, 215343, 215DIG1, B65D 5116, B65D 5300, B65D 5512

Patent

active

043208444

ABSTRACT:
A container closure system such that an uninstructed person would find it difficult to remove the closure. Helical screw threads on the container and on the one-piece closure have detents and discrete thread portions engageable under the influence of a spring means once the closure has been screwed onto (cap) or into (stopper) the container to a certain extent. Unscrewing can only be effected by firstly overcoming the spring means to separate the locking detents/thread portions and subsequently turning the closure while continuing to overcome said spring means.

REFERENCES:
patent: 2776066 (1957-01-01), Thornton
patent: 3072276 (1963-01-01), Nichols
patent: 3114467 (1963-12-01), Montgomery
patent: 3339770 (1967-09-01), Weisand
patent: 3393818 (1968-07-01), McIntosh
patent: 3610454 (1971-10-01), Malick
patent: 3628704 (1971-12-01), Corsette
patent: 3716161 (1973-02-01), Julian et al.
patent: 3746199 (1973-07-01), Hart et al.
patent: 3809276 (1974-05-01), Landen
patent: 3888376 (1975-06-01), Cooke
patent: 3952899 (1976-04-01), Cooke

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