Black Decker Inc.

Michael P Sikora

Colin M Crosby

Ryan F Schroeder

Michael D Grove

Barak N Gohn

Daniel F Heck

Connor T Mohan

Christian B Rogerson

James R Clarke

Nicholas J Lowe

Joseph Patrick Kelleher

Brian E Friedman

Heather Schafer

Richard Dizon

Abraham Lozier

David Irwin

Madhur M Purohit

Ross Arthur Billings

Robert J Cirincione, Ii

Jason D McKillican

Wesson Charles

BhanuPrakash Villuri

Sona R Mathew

Paul J Korick

Michael Allen

Curtiss Morton

A power tool includes a housing containing a motor, an output member configured to be driven by the motor to perform an operation on a workpiece, and a handle having a first end portion coupled to the housing and a second end portion. A base is coupled to the second end portion of the handle. A light emitting assembly is pivotably coupled to the base. The light emitting assembly is configured to be operable in a first mode to illuminate a workpiece and a second mode to indicate a condition of the power tool responsive to the power tool signaling the condition to the light emitting assembly.

Light emitting assembly for a power tool

A power tool includes a housing, a motor disposed in the housing, a motor controller disposed in the housing and electrically coupled to the motor, and a transmission disposed in the housing and coupled to the motor. A tool bit holder is rotatably driven by the motor via the transmission and receives a tool bit for rotatably driving threaded fasteners. A power switch and an electronic model select switch are actuatable from outside the housing and are coupled to the motor controller. The power switch controls power delivery to the motor. The electronic mode select switch is configured to select between at least a first mode of operation in which power delivery to the motor is controlled by actuation of the power switch and an electronic lock on mode in which continuous power is delivered to the motor upon a single actuation and release of the power switch.

Power tool with multiple modes of operation and ergonomic handgrip

A brushless direct-current (BLDC) motor for a power tool includes a rotor assembly and a stator assembly including stator windings. A ratio of a motor size (Km) constant of the motor to an electrical envelope of the motor including electrical parts of the motor is greater than approximately 850 (N·m/√W)/m{circumflex over ( )}3. A ratio of a motor size (Km) constant of the motor to a magnetic envelope of the motor including stator core and windings is greater than approximately 980 (N·m/√W)/m{circumflex over ( )}3.

Brushless DC motor having high power density for power tool

A brushless direct-current (BLDC) motor for a power tool includes a rotor assembly; a stator assembly including a stator having stator teeth forming slots therebetween and stator windings wound around the stator teeth; stator terminals extending substantially parallel to the longitudinal axis from the stator assembly and being substantially aligned with centerlines of the slots of the stator assembly; and a circuit board mounted on the stator terminals adjacent the stator assembly. The circuit board includes conductive traces facilitating a one of a delta or a series connection between the stator windings. An end insulator is provided at an axial end of the stator to electrically insulate the stator from the stator windings, the end insulator including support members to support the stator terminals relative to the stator assembly. The circuit board is mounted and fastened to the support members.

Brushless DC motor with circuit board for winding interconnections

A brushless direct-current (BLDC) motor includes a stator assembly and a rotor assembly including a rotor supporting permanent magnets rotatable relative to the stator assembly. The stator assembly includes a stator comprising a stator core and stator teeth radially extending from the stator core and defining slots therebetween. A first set of stator windings is wound on the stator teeth, and a second set of stator windings is also wound on the stator teeth such that, on each stator tooth, the first and second windings are provided in an electrically parallel configuration.

Brushless DC motor with stator teeth having multiple parallel sets of windings

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Baltimore, MD, United States of America

Michael P Sikora