Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1996-02-29
1998-09-15
Kincaid, Kristine L.
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
174131A, H01B 1106
Patent
active
058082395
ABSTRACT:
A push-cable for mechanically and electrically connecting a video camera head to a push reel and a video circuit includes a central resilient push rod made of a composite material such as resin impregnated glass fibers, and a plurality of conductive wires and filler rods helically wound around the push rod. The push-cable further includes a conductive shield layer surrounding the conductive wires and filler rods and sandwiched between inner and outer layers of plastic film tape. A layer of a high pull strength material such as braided KEVLAR surrounds and overlies the film-enclosed conductive shield. The final layer of the push-cable is a co-polymer polypropylene insulating protective layer. The configuration and geometry of the components of the push-cable are preferably designed to achieve a seventy-five ohm impedence and a high signal-to-noise ratio over an extended length.
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Deepsea Power & Light
Jester Michael H.
Kincaid Kristine L.
Nguyen Chau N.
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