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:
Aug. 29, 2017
Filed:
Jan. 06, 2015
Microsoft Technology Licensing, Llc., Redmond, WA (US);
Steven R. Steinert, Monroe, WA (US);
Daniel N. McManus, Lynnwood, WA (US);
Joseph L. Soroka, Cumming, GA (US);
Vincent Karczewski, Carnation, WA (US);
Shu-Kuen Raymond Chiu, Redmond, WA (US);
Kris S. Redding, Bothell, WA (US);
Scott T. Seaton, Kirkland, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
Key interlock systems and methods are described for safely carrying out a closed-transition procedure in an electric power distribution system in which two load busses that can be separately powered by the same power source or by two different power sources can be connected together via one or more bus tie breakers and in which a static transfer switch is used to selectively deliver power from one of the two different power sources to at least one of the load busses. Embodiments described herein prohibit access to a key that is required to close a bus tie breaker that connects the two load busses until at least a determination is made that a particular bypass breaker of the static transfer switch has been closed, thereby ensuring that both load busses are connected to the same power source.