US Patent No: 8,174,225
Number of patents in Portfolio can not be more than 2000
Limiting peak electrical power drawn by mining excavators
Stats
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May 8, 2012
Issued date -
May 15, 2009
filing date -
12/466,722
serial no -
In Force
status
Importance
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Abstract
The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit.
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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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| 2003/0151,387 Hybrid energy off highway vehicle electric power management system and method | 34 | 2003 | |
| 7,137,344 Hybrid energy off highway vehicle load control system and method | 16 | 2004 | |
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| 4,358,719 Peak power limiter system for excavator | 10 | 1980 | |
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| 6,742,630 Super-capacitor energy storage unit for elevator installations | 9 | 2002 | |
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| 2011/0175,579 SYSTEM AND METHOD FOR PROVIDING AUXILIARY POWER BY REGENERATION POWER MANAGEMENT IN MOBILE MINING EQUIPMENT | 2 | 2011 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 8, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 8, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 8, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
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