Bottles and jars – Closures – With means to facilitate closure removal
Patent
1987-09-21
1988-10-25
Norton, Donald F.
Bottles and jars
Closures
With means to facilitate closure removal
215318, B65D 4122
Patent
active
047797495
ABSTRACT:
A closure device for the neck (1) of a container (2), using a plug (3) having some degree of elasticity, of the type in which closure is obtained by axial snap-engagement, opening being obtained by rotation or unscrewing, the neck (1) and the plug (3) having, on the one hand, a first continuous projection (4) and at least a second localized projection (5), which are adapted to co-operate with one another by axial snap-engagement in order to close the closure device and, on the other hand, a ramp (6) having at least one V-shaped or pseudo-V-shaped profile and at least a third localized projection (7) adapted to co-operate with one another by relative sliding in order to open the closure device by rotation or unscrewing, the first and third projections (4, 7) on the one hand being disposed on the neck (1) and the second projection (5) and the ramp (7) on the other hand being disposed on the plug (3).
REFERENCES:
patent: 3430798 (1969-03-01), Goyet et al.
patent: 3468447 (1969-09-01), Smalley
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