Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1985-03-22
1987-04-14
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
350 962, H01J 516, G02B 642
Patent
active
046581308
ABSTRACT:
A control system for derricks, cranes, and the like consisting of a remote control box, fiber optic cable, reel, tubular connector, tube, swivel coupler, and terminal box which allows instructions for controlling the functional device to be sent from a location remote to the functional device via a light conducting element to a terminal box within a control center situated on the body of a truck, etc. on which said functional device is mounted.
REFERENCES:
patent: 4124272 (1978-11-01), Henderson et al.
patent: 4146300 (1979-03-01), Kaiser
patent: 4373779 (1983-02-01), Dorsey
patent: 4472052 (1984-09-01), Lofgren
Allen S.
Nelms David C.
Weber Edward R.
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