Tamper indicating seal and method for making the same

Details Tamper indicating seal and method for making the same Tamper indicating seal and method for making the same

1987-10-05

1989-05-02

Shoop, Jr., William M.

Signals and indicators

Indicators

Methods

215250, 215252, 215230, 206807, 350442, 350105, 340572, B65D 5502

Patent

active

048258016

ABSTRACT:
An improved tamper indicating seal is disclosed, characterized by the generation of a unique signature pattern which, if altered, is indicative of tampering. The seal includes a layer of transparent material which is applied to at least a portion of a secure object or container. A plurality of particles of refective material are randomly arranged within the layer in a unique orientation. When the seal is exposed to light, the particles reflect a portion of the light to produce a unique reflective pattern which corresponds with the orientation of the particles. Alteration of the particle orientation as a result of tampering alters the reflective pattern. Thus when the reflected pattern of a seal does not correspond with its original signature pattern, tampering is indicated.

REFERENCES:
patent: 3935960 (1976-02-01), Cornell
patent: 4262284 (1981-04-01), Stieff et al.
patent: 4451530 (1984-05-01), Kaule et al.
patent: 4475661 (1984-10-01), Griffin
patent: 4480760 (1984-11-01), Schonberger
patent: 4496618 (1985-01-01), Pernicano
patent: 4502605 (1985-03-01), Wloszczyna
patent: 4511054 (1985-04-01), Shank
patent: 4516679 (1985-05-01), Simpson et al.
patent: 4576297 (1986-03-01), Larson
patent: 4630891 (1986-12-01), Li
patent: 4685579 (1987-08-01), Stapleton
patent: 4711368 (1987-12-01), Simons
patent: 4712868 (1987-12-01), Tung et al.
patent: 4721217 (1988-01-01), Phillips et al.

Affiliated with

Also associated with

Rating

Tamper indicating seal and method for making the same 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 indicating seal and method for making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tamper indicating seal and method for making the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-577857