Deep-drawn screw cap of aluminum for glass bottles under interna

Details Deep-drawn screw cap of aluminum for glass bottles under interna Deep-drawn screw cap of aluminum for glass bottles under interna

1987-12-10

1989-07-04

Norton, Donald F.

Bottles and jars

Closures

Receptacle interior communicable with exterior with closure...

B65D 5116

Patent

active

048442712

ABSTRACT:
A deep-drawn screw cap of aluminum for glass bottles under internal pressure, where the transition area between the upper end face 1 to the lateral thread face 2 up to now was always evenly deep-drawn, now is to have at least one undeformed partial area 8. Because of this, sealing against the lateral edge 7 of the mouth is partially disrupted and a chance for the escape of gas is purposely provided in case the internal pressure in the glass bottle should rise too high. If required, a plurality of such partial areas 8 may be provided. In the deep-drawing device for a sealing head for the production of such screw caps the inner recess 12 should provide at least one partial enlargement 14 oriented towards the center axis 13 and extending approximately to the diameter of the preceding recess 11.

REFERENCES:
patent: 1381365 (1921-06-01), Taliaferro
patent: 2456607 (1948-12-01), Shaffer
patent: 4007848 (1976-02-01), Snyder
patent: 4007851 (1977-02-01), Walker
patent: 4466548 (1984-08-01), Herbert

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