Snap-on/screw-off cap and neck configuration

Details Snap-on/screw-off cap and neck configuration Snap-on/screw-off cap and neck configuration

1996-11-19

1998-07-07

Shoap, Allan N.

Bottles and jars

Closures

Frangible member or portion

215330, 215901, B65D 4147

Patent

active

057755280

ABSTRACT:
A container closure system comprising a threaded cap and a threaded neck wherein the cap is affixed to the neck by direct axial application so that the mating threads slip past one another and into engagement. The cap further includes sealing means to capture and constrict the outer diameter of the neck, and valve means to plug the container opening in the neck and expand the outer diameter of the neck, so that the sealing means and valve means cooperate to improve sealing of the cap and neck. The cap and neck further include tamper-indication means to prevent removal of the cap without activation thereof. The tamper-indication means includes a novel skirt, pull tab and membrane configuration. The container neck may include interrupted threads which do not traverse the parting line and an additional annular seal below the threads on the container neck.

REFERENCES:
patent: 3360149 (1967-12-01), Roth
patent: 4066181 (1978-01-01), Robinson et al.
patent: 4103803 (1978-08-01), Irvine
patent: 4798301 (1989-01-01), Bullock et al.
patent: 4798303 (1989-01-01), Arnold
patent: 4922684 (1990-05-01), Nelson
patent: 5431291 (1995-07-01), LaBombarbe, Jr.
patent: 5553727 (1996-09-01), Molinaro
patent: 5560504 (1996-10-01), Molinaro
patent: 5642825 (1997-07-01), Wohlgemuth

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