US Patent No: 6,921,989
Number of patents in Portfolio can not be more than 2000
Electrical switchgear with synchronous control system and actuator
Stats
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Jul 26, 2005
Issued date -
Nov 22, 2002
filing date -
10/301,678
serial no -
In Force
status
Importance
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Abstract
A closed loop feedback system controls electrical switchgear that moves at least one contact relative to another contact to switch power on and off in an AC electrical circuit. The control system includes a position feedback device that is operatively coupled to at least one of the two contacts to produce contact position information. A processor receives and analyzes the contact position information to control contact motion to provide AC waveform synchronized switching. The electrical switchgear may be a capacitor switch that includes a bi-stable over-toggle latching device. The latching device maintains the contacts in one of an open stable position in which electrical current does not flow through the contacts or a closed stable position in which electrical current flows through the contacts.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,436,414 Drive mechanism for circuit interrupters | 13 | 1993 | |
| 5,486,662 Flexible connector for a circuit interrupter | 7 | 1993 | |
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| 4,686,337 Circuit interrupter having a chemical operator with double-acting drive means | 1 | 1985 | |
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| 5,627,738 Low cost, high reliability soft start arrangement | 19 | 1995 | |
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| 4,479,040 Tactile feel switch with positive switch actuation | 13 | 1983 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 26, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 26, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
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