Closure fasteners – Seals – Encasing
Patent
1978-02-24
1978-10-03
Foss, J. Franklin
Closure fasteners
Seals
Encasing
70440, E05C 1918, B65A 3334
Patent
active
041180577
ABSTRACT:
A reusable, tamper-indicating seal comprises a drum confined within a fixed body and rotatable in one direction therewithin, the top of the drum constituting a tray carrying a large number of small balls of several different colors. The fixed body contains parallel holes for looping a seal wire therethrough. The base of the drums carries cams adapted to coact with cam followers to lock the wire within the seal at one angular position of the drum. A channel in the fixed body -- visible from outside the seal -- adjacent the tray constitutes a segregated location for a small plurality of the colored balls. A spring in the tray forces colored balls into the segregated location at one angular position of the drum, further rotation securing the balls in position and the wires in the seal. A wedge-shaped plough removes the balls from the segregated location, at a different angular position of the drum, the wire being unlocked at the same position. A new pattern of colored balls will appear in the segregated location when the seal is relocked.
REFERENCES:
patent: 102696 (1870-05-01), McNair
patent: 341502 (1886-05-01), Powers et al.
patent: 421951 (1890-02-01), MacCarthy
patent: 721926 (1903-03-01), Tyden
patent: 851644 (1907-04-01), Boan
Carlson Dean E.
Foss J. Franklin
Jackson Frank H.
The United States of America as represented by the United States
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