Fail-safe fiber optic pushbuttons, displays, and systems employi

Details Fail-safe fiber optic pushbuttons, displays, and systems employi Fail-safe fiber optic pushbuttons, displays, and systems employi

1980-03-20

1982-05-18

Pitts, Harold I.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340380, G02B 514

Patent

active

043301746

ABSTRACT:
A method of incorporating at least one fiber tube into a plastic pipe, such that the pipe becomes useable for carrying optical signals along the fiber optic tube as well for carrying a fluid such as water. The fiber optic tube is affixed to the wall of the plastic pipe during extrusion of the latter and in a first embodiment, the fiber optic tube is extruded with the pipe. In a second embodiment, the fiber optic tube is secured to the pipe when the pipe is in a heated state after extrusion.

REFERENCES:
patent: 3498286 (1970-03-01), Polanyi
patent: 3758951 (1973-09-01), Scrivo
patent: 3818369 (1974-06-01), Brocker
patent: 3851328 (1974-11-01), Sottile
patent: 3937952 (1976-02-01), Ripley
patent: 4088387 (1978-05-01), Lewis
patent: 4095217 (1978-06-01), Tani
patent: 4185887 (1980-01-01), Ferrentino

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