Spiral lock safety closure

Details Spiral lock safety closure Spiral lock safety closure

1977-08-22

1978-05-23

Hall, George T.

Bottles and jars

Closures

Having warning means or means impeding closure removal

215222, B65D 5300, B65D 5502

Patent

active

040906299

ABSTRACT:
A safety closure and container assembly including a container, cap and combined spring and sealing member. A retention rib is formed on the inner surface of the skirt of the cap, and a spring and sealing member has a radially projecting flange that engages the retention rib to prevent separation of the spring and sealing member from the cap. Cap and container locking elements are formed respectively on the inner surface of the skirt of the cap and the outer surface of the mouth of the container. The cap and container locking elements are engageable with and disengageable from each other by combined axial and rotary motion of the cap relative to the container. The spring and sealing member biases the cap and container locking elements toward locked engagement with each other when the cap is applied to the container. The cap and container locking elements are formed such that the sealing portion of the spring and sealing member is forced into the mouth of the container into sealing engagement therewith as the cap is rotated relative to the container so that the operator does not have to apply direct axial force to the cap in order to seal the container.

REFERENCES:
patent: 3623623 (1971-11-01), Baver
patent: 4049148 (1977-09-01), Suhr et al.

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