Amperage control for protection of battery over current in power tools
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 7, 2006
Issued Date -
N/A
app pub date -
Feb 18, 2004
filing date -
Feb 18, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Amperage control of a power tool motor is provided by pulse width modulation of current from a power supply. The pulse width modulation may be varied according to the determined motor current and measured power supply voltage. The power supply preferably includes a battery, such a lithium ion or nickel cadmium.
First Claim
Other Claims data not available
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| CN | C | CN100442622 | Feb 18, 2004 |
| US | B2 | US7276878 | Sep 29, 2006 |
International Classification(s)
- 2004 Application Filing Year
- H02P Class
- 889 Applications Filed
- 345 Patents Issued To-Date
- 38.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1279 Citation Count
- H02P Class
- 99.21 % this patent is cited more than
- 19 Age
