Black Decker Inc.

Joel D Sayles

Weston J Van Wambeke

Keith Moore

Madhur M Purohit

Michael D Grove

Wambeke Weston J Van

A power module for driving a motor is provided including a power circuit board, power switches operatively connected to the motor disposed on a first side of the circuit board, and positional sensors disposed on a side surface of the power circuit board facing the motor. The power circuit board includes a thermally-conductive core carrier layer, a first electrically-insulating layer disposed on a first surface of the core carrier layer and on which the power switches are mounted, and a second electrically-insulating layer disposed on a second surface of the core carrier layer and on which the positional sensors are mounted. The second electrically-insulating layer is etched to expose the conductive core layer on at least approximately 70% of a surface area of the second side of the circuit board.

Power module for a brushless motor in a power tool

A metal cutting circular saw is provided with an upper blade guard which includes a first sight window disposed in a first side surface and disposed in a plane angularly offset from a plane of the blade. The upper blade guard also includes a second sight window disposed in the second side surface of the upper blade guard. A light window is disposed in a front portion of the perimeter outer surface of the upper blade guard. The upper blade guard is made from metal and the first and second sight windows and the light window are integrally formed as a one-piece member. The saw shoe and lower blade guard are configured to minimize chip spray from contacting a user.

Metal cutting circular saw with integral sight window

A metal cutting circular saw () is provided with an upper blade guard () which includes a first sight window () disposed in a first side surface and disposed in a plane angularly offset from a plane of the blade (). The upper blade guard () may also include a second sight window () disposed in the second side surface of the upper blade guard (). A light window () is disposed in a front portion of the perimeter outer surface of the upper blade guard (). The saw shoe () and lower blade guard () are configured to minimize chip spray from contacting a user.

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Parkville, MD, United States of America

Joel D Sayles