Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1977-05-12
1980-09-16
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250229, G02B 514
Patent
active
042232171
ABSTRACT:
A preassembled self-contained fiber optic module is disclosed which may be inserted in standard switch enclosures to enable a remote electrical switching function to be performed by means of optical switching within the switch enclosure. A single module mounts facing ends of two fiber optic cables in spaced substantially colinear alignment and also forms a narrow elongated guiding channel perpendicular to the colinear axis of the cables and intersecting the gap therebetween for guiding an operator-driven opaque shutter which is movable into the gap to block the optical path between the facing ends of the cables. Transducer means are provided at the remote ends of the fiber optic cables to supply an electrical signal in response to optical transmission. A fiber optic limit switch and a fiber optic pushbutton switch are specifically disclosed.
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Bongard James A.
Duncan Eugene F.
Jaeschke James R.
Autio William A.
Eaton Corporation
Nelms David C.
Rather Hugh R.
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