Sealing and locking thread system

Details Sealing and locking thread system Sealing and locking thread system

1980-06-02

1982-04-20

Hall, George T.

Bottles and jars

Closures

Cap type

215344, 215DIG1, B65D 4104

Patent

active

043254870

ABSTRACT:
A screw-threaded closure cap to provide sealing of the contents of a container for fluent material upon closing and opening thereof and to provide a wedging torque-controlled securement of the cap to the container. The cap is provided with an internal thread of a pitch essentially identical to the pitch on the neck of the container and cooperates therewith. A continuous helical rib is positioned adjacent the internal cap thread and has a width greater than the depth of the cap thread and the thread on the neck of the container. The helical rib is of resilient material having a good memory. The cap thread is formed as a truncated cone to provide a camming surface cooperative with the helical rib in locking the cap to the container.

REFERENCES:
patent: 3480170 (1968-10-01), Evans et al.
patent: 4125201 (1978-11-01), Birch

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