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:
Apr. 19, 2016
Filed:
Jun. 14, 2011
Madhur M. Purohit, Towson, MD (US);
Earl M. Ortt, Towson, MD (US);
Erik Ekstrom, York, PA (US);
Shailesh P. Waikar, Parkville, MD (US);
Marcell E. Coates, Baltimore, MD (US);
Eric E. Hatfield, Anthem, AZ (US);
Madhur M. Purohit, Towson, MD (US);
Earl M. Ortt, Towson, MD (US);
Erik Ekstrom, York, PA (US);
Shailesh P. Waikar, Parkville, MD (US);
Marcell E. Coates, Baltimore, MD (US);
Eric E. Hatfield, Anthem, AZ (US);
Black & Decker Inc., New Britain, CT (US);
Abstract
A power tool includes a brushless DC motor housed inside an upper body of the tool housing and a control unit housed inside a handle of the housing, the control unit including a micro-controller mounted on a control circuit board, a power unit electronically coupled to the micro-controller and mounted on a power circuit board arranged substantially parallel the control circuit board inside the handle, and a heat sink in thermal contact with the power unit. An input unit may be mounted directly on the control circuit board. An upper portion of the heat sink extending towards the upper body of the housing may include a tab protruding underneath a fan assembly of the motor to transfer heat from the power unit to the airflow created by the fan.