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:
Jan. 10, 2006
Filed:
Sep. 19, 2002
Francis C. Marino, Dix Hills, NY (US);
Jon C. Bruns, Central Islip, NY (US);
Jean U. Millien, Massapequa, NY (US);
Francis C. Marino, Dix Hills, NY (US);
Jon C. Bruns, Central Islip, NY (US);
Jean U. Millien, Massapequa, NY (US);
Honeywell International, Inc., Morristown, NJ (US);
Abstract
A Vplex polling loop device is disclosed which can automatically detect and isolate shorted or overloaded sections of a polling loop, before or after polling loop power and signaling is switched to the output of the device, permitting normal operation of the remaining portion of the polling loop. The Vplex short and overload isolator (VSOI) is usable on former, existing, and future polling loop systems without the need for any software or hardware changes to the associated controls, and may also be used on 2-wire DC voltage distribution systems within the voltage and current limits of the VSOI. It is capable of multiple use anywhere on a polling loop while requiring minimum power from the polling loop. Finally, in the process of detecting and isolating a short or overload on its output, it prevents that short or overload from causing other VSOI devices on the loop to erroneously disconnect their protective branches of the loop.