Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1982-07-15
1988-03-08
Sikes, William L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
350 9610, 350 9624, 350 9620, 340541, 70416, G02B 636
Patent
active
047296267
ABSTRACT:
A seal has a fiber optic bundle which passes through a fastening device. One end of the bundle is exposed to a light source and the light pattern emitted from the other end is observed to determine whether anyone has tampered with the bundle or the fastening device. The bundle has end fittings which are received in intersecting passageways formed in a block and which pass through each other at the intersection. A flat portion of one end fitting passes through a one-way push nut integrally formed in the other end fitting to interlock the fittings. Alternatively, one fitting is press fit in the block and the other fitting is engaged by a one-way push nut mounted in an enlarged portion of its respective passageway. The shapes of the passageways correspond to the shapes of their respective fittings to prevent rotation of the fittings and to align the fittings for intermeshing with each other. The fibers in the bundle are divided and extend through divided passageways formed in one of the end fittings. The block is unitary or is formed of two mirror image halves. A hanger receiving hole is formed in the block.
REFERENCES:
patent: 3455625 (1969-07-01), Brumley et al.
patent: 3637284 (1972-01-01), Plyer
patent: 4095872 (1978-06-01), Stieff et al.
patent: 4106849 (1978-08-01), Stieff
patent: 4161348 (1979-07-01), Ulrich
patent: 4354731 (1982-10-01), Mouissie
Creighton Wray James
Sikes William L.
The Fiber-Lock Corporation
Ullah Akm E.
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