| US 7,551,411 B2 | ||
| Control and protection methodologies for a motor control module | ||
| Samuel G. Woods, Bel Air, Md. (US); Jason K. Leh, Parkville, Md. (US); Daniel R. Beers, Dallastown, Pa. (US); Michael K. Forster, White Hall, Md. (US); John C. Vanko, Timonium, Md. (US); William F. Gallagher, Stewartstown, Pa. (US); William G. Kalbfleisch, Reisterstown, Md. (US); Robert A. Usselman, Forest Hill, Md. (US); and Zollie W. Privett, Baltimore, Md. (US) | ||
| Assigned to Black & Decker Inc., Newark, Del. (US) | ||
| Filed on Oct. 06, 2006, as Appl. No. 11/543,990. | ||
| Claims priority of provisional application 60/726011, filed on Oct. 12, 2005. | ||
| Claims priority of provisional application 60/817085, filed on Jun. 29, 2006. | ||
| Prior Publication US 2007/0097566 A1, May 03, 2007 | ||
| Int. Cl. H02H 7/08 (2006.01) | ||
| U.S. Cl. 361—33 [361/23; 361/1; 318/434; 388/819; 408/124] | 21 Claims |
| 1. A power tool, comprising:
a tool motor drivably coupled to a rotary shaft,
an electronic clutch interfaced with the tool motor;
a microcontroller configured to detect a fault condition in the power tool and initiate a protective action via the electronic
clutch to remove or reduce power to the tool motor in response to the detected fault condition; and
a mechanical clutch disposed between the tool motor and the rotary shaft that operates independently from the microcontroller.
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