Seamless switchover system and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 25, 2019
Grant Date -
Jun 15, 2017
app pub date -
Nov 18, 2016
filing date -
Dec 9, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
First Claim
Family
International Classification(s)
- B61L:GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RA....
- H02J:CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR D....
- B60T:VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BR....
- G05B:CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTION....
- H01H:ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PR....
- B60M:POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR EL....
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully