Appeal No. 1998-1251
Application 08/521,393
The Rejection on Appeal
Claims 1-15 stand rejected under 35 U.S.C. § 103 as being unpatentable over
Tuttle ‘375 and Daniel.
The Invention
The claimed invention is directed to a cable shield fault locator and a method for
detecting cable shield faults with a cable shield fault detector. The only independent
claims are claims 1 and 11 which are reproduced below:
1. A cable shield fault locator for use with a shielded electrical pathway
having an axial dimension extending between first and second locations, comprising:
a coupler driver generating an electrical signal current;
an inductive coupler, fixed in place circumjacent the shielded
electrical pathway near the first location, adapted to couple the electrical signal current to
the shields;
an inductive sensor array, circumjacent the shielded electrical
pathway and axially movable between the inductive coupler and the second location,
adapted to sense an electrical signal current passing along the shield; and
means for detecting a disturbance in the electrical signal current
passing along the shield.
11. The method of detecting cable shield faults with a cable shield fault
locator, comprising:
generating an electrical signal current in a coupler driver;
inductively coupling the electrical signal current to flow axially along an
elongated cable shield at a first location and generate a magnetic field about the shield;
2
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