Tamper-proof cap

Details Tamper-proof cap Tamper-proof cap

1992-10-07

1993-11-30

Shoap, Allan N.

Bottles and jars

Closures

Having warning means or means impeding closure removal

215203, 215219, 215230, 215250, 206534, 2064591, 206807, 116200, 116279, B65D 5502

Patent

active

052657442

ABSTRACT:
A tamper-proof cap for containers, bottles and the like comprising a first driven member and a second drive member concentrically mounted on the first member and having a window through which a visible signal may be observed by a viewer. A rupturable capsule containing signal media is supported on the first driven member and displays a signal of first characteristic through the window. Upon opening the cap by causing the drive member to engage the driven member, the capsule ruptures causing the signal media to display a signal of a second characteristic through the window indicative of the fact that an attempt had been made to open the cap. In an alternative embodiment, a lens mounted on the window portion of the drive member enables viewing of the signal characteristic when the containers bearing the caps of the invention are stored on a relatively high shelf.

REFERENCES:
patent: 3472411 (1969-10-01), Turner
patent: 4069935 (1978-01-01), Hampel
patent: 4440306 (1984-04-01), Van Buskirk et al
patent: 4502605 (1985-03-01), Wloszczyna
patent: 4519515 (1985-05-01), Schonberger
patent: 4801028 (1989-01-01), Puresevic et al.
patent: 4984700 (1991-01-01), Knickerbocker
patent: 4986429 (1991-01-01), Singleton, Jr.
patent: 5092477 (1992-03-01), Johnson, Jr. et al.

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