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:
Dec. 29, 2015
Filed:
May. 18, 2012
Brian C. Sterling, Jarrettsville, MD (US);
Stephen P. Osborne, Baltimore, MD (US);
Paul S. White, Fallston, MD (US);
Michael K. Forster, White Hall, MD (US);
Jason K. Leh, Rosedale, MD (US);
Brian C. Sterling, Jarrettsville, MD (US);
Stephen P. Osborne, Baltimore, MD (US);
Paul S. White, Fallston, MD (US);
Jeffery D. Delcamp, Baltimore, MD (US);
Michael K. Forster, White Hall, MD (US);
Jason K. Leh, Rosedale, MD (US);
BLACK & DECKER INC., Newark, DE (US);
Abstract
A power tool including a motor, light unit, and switch unit for selectively connecting the motor and light unit to a power source. A control module includes a controller coupled to a first electronic switch to control power delivery to the motor based on a position of the switch unit, and to a second electronic switch to control power delivery to the light source based on a position of the switch unit. A timer is configured to keep the light unit illuminated for a predetermined amount of time after the switch unit has been activated or deactivated. The control module also includes a boot circuit with a semiconductor switch that continues to deliver power to the controller and to the light unit when the switch unit is deactivated subsequent to being activated, to enable the light unit to remain illuminated after the switch unit has been deactivated.