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US 5,331,606 AGranted
Static dissipating data cable and seismic apparatus
AssigneeWestern Atlas International, Inc.
InventorJames A. Sackett
Life of this patent
Estimating the term…
Abstract
Doping the jacket of a data cable reduces the bulk volume resistivity of the jacket material allowing built-up static electricity to discharge. This reduces the likelihood of static charge interfering with data transmission.
Claims5
An apparatus for use in seismic surveying, comprising:
- (a) a plurality of spaced-apart geophones;
- (b) a cable coupling the geophones of the plurality of geophones, said cable having:
- (i) at least one electrical conductor;
- and
- (ii) a polyurethane jacket placed around the at least one electrical conductor, said jacket doped with a semi-conductive polyethylene material to reduce the bulk sensitivity of the jacket;
- and
- (c) a recording apparatus coupled to the cable for receiving signals from the geophones in said plurality of geophones.
4 more elements
A cable for use in seismic surveying, comprising at least one conductor encased in a polyurethane jacket which is doped with a semiconductive polyethylene material to obtain a bulk resistivity of the jacket between 10.sup.5 to 10.sup.9 ohms-cm.
Dependencies are inferred from the claim text.