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:
Jun. 12, 2012
Filed:
Sep. 14, 2009
Jeffrey Baxter, Hillsboro, OR (US);
Brent Baxter, Hillsboro, OR (US);
Michael Baxter, Hillsboro, OR (US);
Ted Holbrook, Gresham, OR (US);
Jeffrey Baxter, Hillsboro, OR (US);
Brent Baxter, Hillsboro, OR (US);
Michael Baxter, Hillsboro, OR (US);
Ted Holbrook, Gresham, OR (US);
Energy Safe Technologies, Inc., Great Neck, NY (US);
Abstract
A safety circuit used in low-voltage connecting systems leaves the two low-voltage systems disconnected until it determines that it is safe to make a connection. When the safety circuit determines that no unsafe conditions exist and that it is safe to connect the two low-voltage systems, the safety circuit may connect the two systems by way of a 'soft start' that provides a connection between the two systems over a period of time that reduces or prevents inductive voltage spikes on one or more of the low-voltage systems. When one of the low-voltage systems has a completely-discharged battery incorporated into it, a method is used for detection of proper polarity of the connections between the low-voltage systems. The polarity of the discharged battery is determined by passing one or more test currents through it and determining whether a corresponding voltage rise is observed.