Reusable tamper-indicating security seal

Patent · Sat Jan 01 00:00:00 EST 1983

OSTI ID:864583

Ryan, Michael J ^[1]

---

1. Plainfield, IL

The invention teaches means for detecting unauthorized tampering or substitutions of a device, and has particular utility when applied on a "seal" device used to secure a location or thing. The seal has a transparent body wall, and a first indicia, viz., a label identification is formed on the inside surface of this wall. Second and third indicia are formed on the outside surface of the transparent wall, and each of these indicia is transparent to allow the parallax angled viewing of the first indicia through these indicia. The second indicia is in the form of a broadly uniform pattern, viz, many small spaced dots; while the third indicia is in the form of easily memorized objects, such as human faces, made on a substrate by means of halftone printing. The substrate is lapped over the outside surface of the transparent wall. A thin cocoon of a transparent material, generally of the same material as the substrate such as plastic, is formed over the seal body and specifically over the transparent wall and the second and third indicia formed thereon. This cocoon is seamless and has walls of nonuniform thickness. Both the genuineness of the seal and whether anyone has attempted to compromise the seal can thus be visually determined upon inspection.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4389063
• OSTI ID: 864583
• Country of Publication: United States
• Language: English

Related Subjects

reusable
tamper-indicating
security
seal
teaches
means
detecting
unauthorized
tampering
substitutions
device
particular
utility
applied
secure
location
transparent
wall
indicia
viz
label
identification
formed
inside
surface
third
outside
allow
parallax
angled
viewing
form
broadly
uniform
pattern
spaced
dots
easily
memorized
human
substrate
halftone
printing
lapped
cocoon
material
plastic
specifically
thereon
seamless
walls
nonuniform
thickness
genuineness
attempted
compromise
visually
determined
inspection
security seal
outside surface
transparent wall
uniform thickness
inside surface
formed thereon
particular utility
transparent material
parent material
detecting unauthorized
/292/40/283/