Receptacles – Closures – With closure opening arrangements for means
Patent
1979-10-10
1981-04-14
Hall, George T.
Receptacles
Closures
With closure opening arrangements for means
220214, 215216, 215252, 215256, B65D 4132
Patent
active
042614783
ABSTRACT:
A tamper-proof closure cap for use with the externally threaded neck opening of a container for providing a visible indication of tampering attempts with the container includes a generally cylindrical main body portion which is internally threaded and suitable for mating engagement with the externally threaded neck opening. Extending around the lower edge of the main body portion and for approximately 150.degree. is a removable sector ring which is joined to the main body portion by three evenly spaced-apart connecting elements. Located adjacent to the externally threaded neck opening is an interlock protuberance which includes an inclined lower surface and the top surface of the removable sector ring has a compatible sawtooth profile. The teeth of the sawtooth profile ratchetly engage the inclined surface of the interlock protuberance. The pitch of the internal and external threads is such so as to dispose the removable sector ring above the interlock protuberance on all revolutions of the closure cap onto the neck opening prior to the last turn. After the last turn the removable sector ring is disposed beneath the interlock protuberance and ratchetly engages its inclined lower surface. Due to the wedge-shaped teeth, the closure cap is unable to be unscrewed from the neck opening until such time as the sector ring is separated from the main body portion which may be accomplished by pulling on the sector ring and fracturing the three connecting elements.
REFERENCES:
patent: 3812994 (1974-05-01), Feldman
patent: 3891110 (1975-06-01), Gach
Hall George T.
Ruke Corporation
LandOfFree
Tamper-proof closure cap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tamper-proof closure cap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tamper-proof closure cap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-154941