Bottles and jars – Closures – Having warning means or means impeding closure removal
Patent
1984-03-12
1985-02-19
Hall, George T.
Bottles and jars
Closures
Having warning means or means impeding closure removal
215219, 215220, B65D 5502, B65D 8556, A61J 100
Patent
active
045000050
ABSTRACT:
A tamper-evident cap assembly for a container with an externally screw-threaded top has an inner cap having an annular wall and an open lower end, the annular wall having an internal screw-thread to enable the inner cap to be screwed onto the top of the container by clockwise movement of the inner cap relative to the container. An outer cap has an annular wall, a closed upper end and an open lower end, the outer cap being fitted over the inner cap and retained in assembly with the inner cap. The annular walls of the inner and outer caps have mutually-engaging screw-threads to cause initial anticlockwise turning movement of the outer cap to result in angular movement of the outer cap relative to the inner cap. The inner and outer caps have cooperating ratchets to cause clockwise movement of the outer cap to be transmitted to the inner cap while permitting anticlockwise movement of the outer cap relative to the inner cap. The closed end of the outer cap has a window and the inner cap has an insignia which is not visible in the window when the outer cap is in an initial relatively clockwise position relative to the inner cap and which is visible when the outer cap has been turned in an initial anticlockwise movement relative to the inner cap.
REFERENCES:
patent: 4319690 (1982-03-01), Birrell et al.
patent: 4446979 (1984-05-01), Gach et al.
patent: 4454955 (1984-06-01), Kusz et al.
Delbridge Robert F.
Fors Arne I.
Hall George T.
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