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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.:

US 10332708 B1

PDFFull Text
Date of Patent:
Jun. 25, 2019

Filed:

Nov. 18, 2016

Seamless switchover system and method

Applicant:

Thales Canada Inc, Toronto, Ontario, CA;

Inventors:

Abe Kanner, Toronto, CA;

Mihai Lungu, Toronto, CA;

Janice Zhao, Toronto, CA;

Assignee:

THALES CANADA INC, Toronto, Ontario, CA;

Attorney:

Hauptman Ham, LLP

Primary Examiner:

Thomas L Dickey

Int. Cl.
CPC ...
B60T 13/66 (2006.01); H01H 47/00 (2006.01); B60M 3/04 (2006.01); B60T 7/12 (2006.01); B61L 7/06 (2006.01); B61L 23/00 (2006.01); G05B 15/02 (2006.01); B60T 7/18 (2006.01); B61L 15/00 (2006.01); B60T 17/22 (2006.01); H02J 3/00 (2006.01);
U.S. Cl.
CPC ...
H01H 47/002 (2013.01); B60M 3/04 (2013.01); B60T 7/12 (2013.01); B60T 7/18 (2013.01); B60T 13/665 (2013.01); B60T 17/228 (2013.01); B61L 7/06 (2013.01); B61L 15/0036 (2013.01); B61L 15/0063 (2013.01); B61L 23/005 (2013.01); G05B 15/02 (2013.01); H02J 3/006 (2013.01); B61L 15/0081 (2013.01);
Abstract

A system and method provide seamless control switchover through an input coupled to a power line and a safety apparatus that actuates if the input remains de-energized for a first time interval. Each of a plurality of subsystems has a control unit that controls a power source to energize the power line and is capable of transitioning between master and slave states. A first switch or second and third switches in series couple the power source to the power line. The first switch is closed during master state operation. The second switch is closed during slave operation and the third switch is open if any subsystem control unit is in master state. The system is configured to open or close the first switch, the second switch, or the third switch responsive to a transition of a control unit to or from master state within the first time interval.

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