The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2014
Filed:
Aug. 30, 2012
Qiang Zhang, Lutherville, MD (US);
Uday Deshpande, San Diego, CA (US);
John Charles Vanko, Timonium, MD (US);
Jason Leh, Rosedale, MD (US);
Craig Schell, Street, MD (US);
Thomas Jay Bodine, Glenwood, MD (US);
Joao Norona, Baltimore, MD (US);
David Beers, Dallastown, PA (US);
Qiang Zhang, Lutherville, MD (US);
Uday Deshpande, San Diego, CA (US);
John Charles Vanko, Timonium, MD (US);
Jason Leh, Rosedale, MD (US);
Craig Schell, Street, MD (US);
Thomas Jay Bodine, Glenwood, MD (US);
Joao Norona, Baltimore, MD (US);
David Beers, Dallastown, PA (US);
Black & Decker Inc., Newark, DE (US);
Abstract
A control system is provided for use in a power tool. The control system includes: a rotational rate sensor having a resonating mass and a controller electrically connected to the rotational rate sensor. The rotational rate sensor detects lateral displacement of the resonating mass and generates a signal indicative of the detected lateral displacement, such that the lateral displacement is directly proportional to a rotational speed at which the power tool rotates about an axis of the rotary shaft. Based on the generated signal, the controller initiates a protective operation to avoid further undesirable rotation of the power tool. The controller may opt to reduce the torque applied to shaft to a non-zero value that enables the operator to regain control of the tool.