Milwaukee Electric Tool Corporation

Jonathan E Abbott

John Stanley Dey, Iv

Douglas R Fieldbinder

Maxwell L Merget

Timothy Ryan Obermann

Jacob Paul Schneider

Benjamin R Suhr

Carter H Ypma

Richard A Ryer

Gareth J Mueckl

Jeremy R Ebner

Randolph McHugh

Lance D Lamont

Jonathon R Gasteiner

Troy Charles Thorson

Christopher S Hoppe

John S Scott

Peter Russell Heath

Matthew N Thurin

Jeffrey M Wackwitz

James Wekwert

Alexander Huber

Carl B Westerby

Logan M Hietpas

Peter Malak

Benjamin T Jones

Ian A Duncan

Nathan Bandy

Przemyslaw M Krol

Arhum M Zafar

Hannah Elizabeth Phipps

Nicholas J LePar

Justin A Evankovich

Kris J Kanack

Matthew Post

Corey J Dickert

Todd Andrew Zeilinger

Kellen Carey

Timothy J Radtke

Steven M Smith

Grace Whitmore

Samuel L Lombardi

John W Thiele

Benjamin A Smith

Brian J Yue

Alex R Kuhls

Brandon L Yahr

Isabella A Spek

Courtney J Burns

Josh Rowland

Scott Michael Cline

James C Popp

James N Moran

Ian Spayer

Jay Walsh

Steven B Sedig

George I Roudebush

Griffin M Steffy

Parker McColl

Niladri Basu Bal

Daniel E Endean

Sara D Linginfelter

Richard A Zainer

John S Dey

A power tool including a housing, a trigger, a motor coupled to an output member, and a motor drive circuit coupled to the motor. The power tool further includes a motor controller coupled to the motor drive circuit. The motor control circuit is configured to detect a position change of the trigger, determine one or more parameters associated with the position change, and generate an output based on the one or more determined parameters and a variable trigger mapping function. The output is then output to the motor drive circuit.

Adaptive trigger mapping

Systems and methods for detecting and acting on bind-up conditions of a power tool. The power tool includes a housing, a motor, a battery pack, and a motion sensor configured to sense rotational motion of the housing. An electronic controller is connected to the motor, the battery pack, and the motion sensor. The electronic controller is configured to determine whether a battery fetting event is occurring and adjust a rotational motion threshold used to determine a bind-up event based on the battery fetting event. The electronic controller is further configured to receive, from the motion sensor, a first signal associated with a rotational motion of the housing, compare a value based on the signal to the rotational motion threshold, and initiate, in response to the value being greater than or equal to the rotational motion threshold, a protective operation.

Anti bind-up control for power tools

A chuck assembly for a rotary power tool includes a chuck body rotatable about a central axis. The chuck body has a plurality of slots, each oriented at an oblique angle relative to the central axis. The chuck assembly also includes a plurality of jaws, each movable along a respective one of the slots. The chuck assembly also includes a collar coupled to the plurality of jaws. The collar is selectively engageable with the chuck body such that, when engaged, the plurality of jaws are movable along the plurality of slots in response to rotation of the collar.

Chuck assembly for a rotary power tool

A powered fastener driver includes a cylinder containing a pressurized gas, a piston within the cylinder and moveable from a top-dead-center position to a bottom-dead-center position, a driver blade moveably coupled to the piston for driving a fastener into a workpiece, and a lifter mechanism for providing torque to move the driver blade from the bottom-dead-center position toward the top-dead-center position. The powered fastener driver also includes a sensor configured to monitor a current draw of a motor of the lifter mechanism, and a controller is electrically connected to the motor and the sensor. The controller is configured to monitor the current draw of the motor, correlate, using an algorithm stored in the controller, the current draw to a pressure value. The controller is also configured to compare the pressure value to a predetermined pressure range and activate an indicator when the pressure value is outside the predetermined pressure range.

Powered fastener driver

A power tool includes a housing, a motor, a first sensor configured to generate first sensor data related to a movement of the power tool, and a controller. The controller is configured to receive the first sensor data from the first sensor between a first operation and second operation of the power tool, wherein the first sensor data is related to the movement of the power tool, determine a change in position of the power tool based on the first sensor data, determine that the second operation of the power tool is complete based on the change in position of the power tool, and output an indication to a user interface to alert a user that the second operation was completed.

Power tool control for multiple fastener applications

A device for performing a function. The device including a housing, an indicator configured to provide an indication, a first electronic processer within the housing and configured to control operation of the indicator, and a wireless communication device including a second electronic processer. The wireless communication device is configured to wirelessly communicate with an external device, communicate with the first electronic processer to transfer data between the first electronic processer and the external device, receive a signal from the external device, and provide the signal to the first electronic processer. The first electronic processer is configured to prohibit, in response to receiving the signal from the wireless communication device, the indicator from providing the indication.

Externally controlled indicator

A method of driving a rod into the ground comprises coupling an impact portion of an attachment to a powered hammer, positioning the rod between a first jaw of the attachment and a second jaw of the attachment, activating a first motor to move the first jaw toward the second jaw, such that the rod is clamped between the two jaws, and activating a second motor to drive an axial impact mechanism of the powered hammer to deliver repeated axial impacts to the impact portion of the attachment.

Attachment for powered hammer

A stand-alone motor unit for use with a piece of power equipment includes a housing and a flange coupled to the housing on a first side thereof. A plurality of apertures through the flange defines a first bolt pattern that matches an identical, second bolt pattern defined in the piece of power equipment. An electric motor has a power output of at least about 2760 W. The motor includes a stator having a nominal outer diameter of up to about 80 mm and a rotor supported for rotation within the stator. A power take-off shaft receives torque from the rotor and protrudes from one of the flange or a second side of the housing. A controller is positioned within the housing and electrically connected to the motor. A battery pack for powering the motor has battery cells having a nominal voltage of up to about 80 V.

Battery-powered stand-alone motor unit

A power tool including a housing, a brushless direct current (DC) motor, an impact mechanism including a hammer and an anvil, an output drive device, a position sensor, and a controller. The position sensor is adjacent to a relief feature, which may be a recessed relief feature or a raised relief feature, and is configured to generate an output signal indicative of a position of the anvil. The controller is configured to calculate a drive angle based on the determined position of the anvil, and control the brushless DC motor based on the drive angle of the anvil.

Systems and methods for detecting anvil position using a relief feature

A method of controlling a rotary impact tool includes activating a motor to provide torque to a drive assembly, providing rotational impacts to a torque stick coupled to an anvil of the drive assembly in response to a reaction torque on the drive assembly exceeding a threshold value, and sensing a position of the anvil with a position sensor. The position sensor transmits a first signal indicative of the anvil rotating in a first direction and a second signal indicative of the anvil rotating in a second direction, where the second direction is a rebound angle of the anvil. The method further includes calculating a torque transferred from the torque stick to a workpiece by multiplying the rebound angle by a torsional stiffness value of the torque stick and deactivating the motor in response to the torque exerted on the workpiece being substantially equal to a torque limit.

Torque stick for a rotary impact tool

A multi-size tool bit holder includes a first sleeve with a first bit holding bore extending along an axis and a first accommodating bore extending through a sidewall of the first bit holding bore, a second sleeve coupled for co-rotation with the first sleeve and movable relative to the first sleeve between a first position and a second position, the second sleeve including a second bit holding bore extending along the axis and a second accommodating bore extending through a sidewall of the second bit holding bore, and a retaining element. The retaining element has a first securing position in which the retaining element extends through the first and second accommodating bores when the second sleeve is in the first position and into a groove in a bit shank to axially secure the bit shank within the second sleeve.

Multi-size tool bit holder for a rotary power tool

Systems and methods for evaluating a crimping application. A power tool includes a pair of jaws configured to crimp a workpiece, a piston cylinder configured to actuate at least one of the pair of jaws, and a pressure sensor configured to provide pressure signals associated with a crimping application. The power tool also includes an electronic processor connected to the pressure sensor. The electronic processor is configured to monitor, while performing the crimping application, a pressure applied by the piston cylinder, construct a pressure curve indicative of a change in the pressure applied during the crimping application, process the pressure curve into a vector indicative of one or more features, evaluate the crimping application based on the vector, and provide an output indicative of the evaluation.

Systems and methods for evaluating crimp applications

Power tool methods and systems are provided for aligning a power tool to implement an angled cut in a workpiece. The power tool includes a first distance sensor and a second distance sensor. The power tool measures a first distance to the workpiece with the first distance sensor and a second distance to the workpiece with the second distance sensor. The power tool calculates an angle between the power tool and the workpiece based on the first and second distances, and indicates the angle via an angle output indicator of the power tool. The power tool may measure an angle between the power tool and the workpiece using a proximate edge and a distal edge of the workpiece, and indicate whether the power tool maintains a correct angle as it traverses a cut through the workpiece from the proximate edge to the distal edge.

Power tool angle assist

A device, such as a power tool, configured to receive a battery pack that is operable to determine a type of battery pack that is attached to the device. When the battery pack is connected to the device, the device is configured to determine an impedance of the battery pack. Based on the determined impedance of the battery pack, the device is capable of detecting the particular type of battery pack that has been attached. In some embodiments, the device is configured to be controlled based on the type of battery pack that has been detected by the device.

Detecting battery pack type based on battery pack impedance

Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool about the rotational axis. The power tool includes an electronic processor coupled to the switching network and the movement sensor and configured to implement kickback control of the power tool. To implement the kickback control, the electronic processor is configured to control the switching network to drive the brushless DC motor, receive measurements of the angular velocity of the housing of the power tool from the movement sensor, determine that a plurality of the measurements of the angular velocity of the housing of the power tool exceed a rotation speed threshold, and control the switching network to cease driving of the brushless DC motor in response to determining that the plurality of the measurements of the angular velocity exceed the rotation speed threshold.

Kickback control methods for power tools

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Milwaukee, WI, United States of America

Jonathan E Abbott