Antenna cable break detector for construction machine...

Details Antenna cable break detector for construction machine... Antenna cable break detector for construction machine...

2011-03-08

2011-03-08

Natalini, Jeff (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

Reexamination Certificate

active

07902832

ABSTRACT:
An antenna cable break detector used with a construction machine wireless communication apparatus to detect a break in an antenna cable. The antenna cable4includes a central wire6and an armor wire7that is positioned concentrically outside the central wire. One end of the central wire and the armor wire is connected to a communication device. The other end of the central wire is connected to an antenna3. The other end of the armor wire is grounded. The antenna cable break detector has a direct current shutoff device that is connected to the armor wire to shut off the flow of direct current15from the armor wire to the communication device. There is also a current shutoff detection device that is connected to the armor wire to detect the shutoff of the flow of a direct current to the armor wire.

REFERENCES:
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patent: 6215315 (2001-04-01), Maejima
patent: 6927579 (2005-08-01), Blades
patent: 7046157 (2006-05-01), Graube
patent: 2002/0024342 (2002-02-01), Bussinger
patent: 11-064432 (1999-03-01), None
patent: 01/73217 (2001-10-01), None
patent: 2002-056726 (2002-02-01), None
patent: 2004-192512 (2004-07-01), None
patent: 2005-344482 (2005-12-01), None

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