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:
Mar. 29, 2016
Filed:
Jun. 30, 2010
Matthew Wilbur Naiva, Wauwatosa, WI (US);
Mark Alan Verheyen, Whitefish Bay, WI (US);
Joseph Daniel Riley, Grafton, WI (US);
Matthew Wilbur Naiva, Wauwatosa, WI (US);
Mark Alan Verheyen, Whitefish Bay, WI (US);
Joseph Daniel Riley, Grafton, WI (US);
EATON CORPORATION, Cleveland, OH (US);
Abstract
An improved overload relay includes a number of current transformers that draw power from a circuit it protects to power itself. The current transformers charge a capacitor which powers a processor and which can energize a solenoid to initiate the interruption of the circuit. The overload relay further includes a capacitor analysis circuit which detects an operational parameter of the capacitor and enables a processor to determine when the energy storage capability of the capacitor has dropped to a predetermined threshold. In the event of such a determination, the overload relay can perform any of a number of actions.