Milwaukee Electric Tool Corporation

Jacob Paul Schneider

John Stanley Dey, Iv

Mackenzie J Nick

Troy Charles Thorson

Beth E Cholst

David A Bierdeman

Nathan Bandy

Leonard F Mikat-Stevens

Evan Brown

Andrew J Weber

Marcus Wechselberger

Douglas R Fieldbinder

Maxwell L Merget

Mitchell T Neuhoff

Travis W Leathrum

David C Graf

Mark C Hughes

Matthew J Mergener

Jonathan E Abbott

Jacob N Zimmerman

Jason M Julius

Rosalie C Phillips

Hans T Banholzer

Joseph H Ellice

Wyatt R Silha

Michael R Sande

Timothy Ryan Obermann

Scott Robert Fischer

Ian A Duncan

Toby J Lichtensteiger

Christopher S Hoppe

Mark Alan Kubale

Daniel Robert Ertl

Gareth J Mueckl

Jeffrey M Wackwitz

Peter Malak

Sara Burch

Qiang Li

Guang Hu

Peter Russell Heath

Kris J Kanack

Gerald A Zucca

Brandon L Yahr

Benjamin A Smith

Tyler L Graham

Trent Sheffield

Connor M Temme

Braden A Roberts

FengKun Lu

Joseph T Lottes-Paukner

James A Yaccarino

Joseph J Drees

Qian Guo Qin

Pu Shao Zhang

Kentez L Craig

Josh Rowland

Zachary J Geschke

Justin A Evankovich

Anthony E Breitbach

Benjamin J Farley

Adam A Ostrowski

Joseph T Lottes

Eric A Lembach

John S Dev, Iv

Nathan P Sievers

Caleb Nathaniel Hille

Maxwell A Casper

Connor Temme

James B Howard

Matthew W Roeber

Benjamin J Skelton

John S Dey Iv

John Stanley Iv Dey

John S Iv Dey

John S Dey

Xiaobing Guo

Shane Mccue

Zhendong Liu

Iv John S Dey

Haineng Ye

Zhiyong Zhou

Manyi Zhou

GuoPeng Chen

A trigger assembly for a power tool includes a housing, a moveable plunger extending from a surface of the housing, the movable plunger includes a first end disposed externally from the housing and a second end disposed internally within the housing. The trigger assembly further includes a trigger shoe coupled to the first end of the moveable plunger, and an arm including a first side that is moveably connected to the second end of the moveably plunger and a second side that is coupled to a magnet. The trigger assembly also includes a sensor configured to sense a magnetic field of the magnet. Movement of the trigger shoe rotates the magnet, and alters the magnetic field sensed by the sensor.

Contactless trigger with rotational magnetic sensor for a power tool

A power tool including a motor and an impact mechanism. The impact mechanism is coupled to the motor and includes a hammer driven by the motor, and an anvil positioned at a nose of the power tool, and configured to receive an impact from the hammer. The power tool also includes a sensor assembly positioned at the nose of the power tool, and an electronic processor. The sensor assembly includes an output position sensor configured to generate an output signal indicative of a position of the hammer or the anvil. The electronic processor is coupled to the output position sensor and to the motor, and is configured to operate the motor based on the output signal from the output position sensor.

Power tool including an output position sensor

A powered fastener driver includes a driver blade and a drive unit having an output shaft for providing torque to move the driver blade from the bottom-dead-center position toward the top-dead-center position. A rotary lifter is engageable with the driver blade and configured to receive torque from the output shaft of the drive unit in a first rotational direction for returning the driver blade from the bottom-dead-center position toward the top-dead-center position. A kickout arrangement is defined between the lifter and the output shaft and configured to permit limited movement of the lifter relative to the output shaft between a first position and a second position. The kickout arrangement having a curvilinear slot defined in the rotary lifter in which a portion of the output shaft is received. Movement of the rotary lifter from the first position toward the second position causes the slot to move relative to the output shaft, while the output shaft remains within the slot.

Lifter mechanism for a powered fastener driver

An anvil for an impact tool including an impact receiving portion at an end of the anvil, the impact receiving portion including a lug having an impact receiving surface that receives impact from a hammer of the rotary power tool, a shank portion extending from the impact receiving portion, a drive portion located at an end of the shank portion opposite from the impact receiving portion, the drive portion including a plurality of drive surfaces configured to engage a tool bit, and a hardened layer formed on at least one of the drive portion or the impact receiving surface, the hardened layer having a higher hardness than a remaining portion of the anvil. The hardened layer is formed by a heating process.

Impact tool anvil and method of manufacture

Position sensing related to a component within a power tool. The component within the power tool is, for example, a hammer of an impact mechanism and can include one or more sensible features that allow a controller of the power tool to precisely determine the position, speed, and acceleration of the component. One or more sensors can be used to determine the rotational position of the hammer and the axial position of the hammer. The rotational position of the hammer can then be used to calculate, for example, rotational speed and acceleration of the hammer. With precise determinations of the rotational and axial position of the hammer, the controller of the power tool is able to precisely time the impact between the hammer and the anvil to optimize the impact between the hammer and the anvil (e.g., to maximize energy transfer between the hammer and the anvil).

Power tool component position sensing

A power tool includes a motor housing and a motor supported within the motor housing. The motor includes an output shaft defining an axis. The power tool also includes a bearing configured to support the output shaft for rotation about the axis, an end cap removably coupled to the motor housing, and a bearing retainer integrally formed with the end cap. The bearing retainer is configured to axially and radially secure the bearing to the end cap.

Bearing retainer for a power tool

A power tool includes a first housing portion and a second housing portion, a motor directly mounted between the housing portions with an output shaft defining an axis, and a gear assembly supported within the housing and including a ring gear directly supported by the housing portions, a pinion gear coupled for co-rotation with the output shaft, and planet gears meshed with the pinion gear and the ring gear. The power tool also includes a drive assembly operably coupled to the gear assembly with a camshaft, an anvil, a hammer configured to reciprocate along the camshaft to impart rotational impacts to the anvil, and a spring biasing the hammer towards the anvil. The ring gear includes lugs engaged with the first housing portion and the second housing portion to rotationally constrain the ring gear.

Compact impact tool

A power tool includes a housing with a motor housing portion and a handle portion extending from the motor housing portion, a motor supported within the motor housing portion, a drive assembly operatively coupled to the motor, the drive assembly producing vibrations during operation of the power tool, a battery receptacle located within the handle portion, a battery at least partially insertable into the battery receptacle along a battery axis, the battery configured to provide power to the motor, and a vibration mitigation system configured to reduce transmission of the vibrations produced by the drive assembly to the battery.

Power tool with battery vibration mitigation

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 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 power tool also includes a target positioned on a shaft, a magnetic shield positioned on the shaft between the target and the anvil, and a position sensor. The position sensor includes an inductive sensor, a first transmitting circuit trace, and a first receiving circuit trace. 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 an inductive sensor

A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position to a bottom-dead-center (BDC) position for driving a fastener into a workpiece and a drive unit for providing torque to move the driver blade from the BDC position toward the TDC position. A kickout arrangement is at least partially defined by an outer surface on one of a torque output member and a torque input member and an aperture formed in the other of the torque output member and the torque input member in which the outer surface is received. The kickout arrangement configured to permit limited rotation of the torque output member relative to the torque input member between a first position and a second position.

Systems and methods for reducing vibration in power tool. One system includes a power tool that includes a housing and a motor. The power tool further includes a magnetically susceptible fluid located within the housing. The power tool further includes an inductor configured to introduce a magnetic field to the magnetically susceptible fluid. The power tool further includes a sensor configured to indicate an amount of vibration experienced by the power tool. The power tool further includes an electronic processor coupled to the sensor and to the inductor. The electronic processor is configured to receive a user-selected sensitivity level for vibration control, to receive an input signal from the sensor indicating the amount of vibration, to generate a control signal based on the input signal, and to provide the control signal to the inductor to control the magnetic field.

Vibration reduction system and method for power tools

An impact tool includes a housing having a motor housing portion and an impact housing portion. The impact housing portion has a front end defining a front end plane. An electric motor is supported in the motor housing, a battery pack is supported by the housing for providing power to the motor, and a drive assembly is supported by the impact housing portion. The drive assembly includes an anvil extending from the front end of the front housing portion with an end defining an anvil end plane. The drive assembly also includes a hammer rotationally and axially movable relative to the anvil for imparting the consecutive rotational impacts upon the anvil, and a spring for biasing the hammer in an axial direction toward the anvil. A distance between the front end plane and the anvil end plane is greater than or equal to 6 inches.

Impact tool

A power tool supportable by a lanyard. The power tool includes a motor housing, a motor arranged in the motor housing, a front housing, an output member extending from the front housing, a gear case, and a gear train arranged in the gear case. The gear train configured to transfer torque from the motor to the output member. The power tool further includes a first fastener securing the front housing to the motor housing and a bracket to which the lanyard is attachable. The bracket is fastened to one of the front housing, the motor housing, or the gear case by a second fastener that does not secure the front housing to the motor housing.

Power tool

Growing community of inventors

Madison, WI, United States of America

Jacob Paul Schneider