The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2010
Filed:
Dec. 21, 2004
Applicants:
David Denoon-stevens, Cape Town, ZA;
Neels Paul DE Villiers, Ridgeworth, ZA;
Inventors:
David Denoon-Stevens, Cape Town, ZA;
Neels Paul De Villiers, Ridgeworth, ZA;
Assignee:
GE Security, Inc., Bradenton, FL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A network loop monitor () is disclosed which comprises an RS485 port () for connection to a host which receives and transmits data. The port () comprises termination jumpers (), a transmitter/receiver () and an isolator (). The monitor () includes two further RS485 ports () each of which has a termination (), a transmitter/receiver () and an isolator (). A relay () controls contacts () in the line pair (). Router logic () controlled by a microprocessor () determines the status of the loop monitor.