Milwaukee Electric Tool Corporation

Mitchell Carlson

Terry L Timmons

Paul W Eiche

Ligan Wu

Patrick Dennis Gallagher

Travis J Dubnicka

Cameron R Schulz

Kyle J Radovich

Paul Rossetto

John Gordon Marx

David M Schwalbach

Ding Feng Hu

Fanbin Zeng

Zhiqiang Yu

Eric C Onsager

Timothy Ryan Obermann

Dane Laitinen

Bradley S Helm

Gabriel M Vara

Troy Charles Thorson

Alex Huber

Amanda M Kachar

Timothy J Bartlett

Joseph H Ellice

Matthew Leidel

Lance D Lamont

Daniel Robert Ertl

Brian Alves

Samantha L Billetdeaux

Toby J Lichtensteiger

Jonathan E Schmitz

Terry L Timmons, Jr

Jessie L Bernitt

Kathleen M Keegan

Paul Rosetto

Wesley S Bassindale

Kevin Staszak

Colin J Harper

Erick Moreno Flores

Austin Jin

A drill stand including a base, a mast defining a longitudinal axis and pivotably coupled to the base, a support bracket moveably coupled to the mast and pivotably coupled to the base, a carriage moveably coupled to the mast, and a release valve. The base has, on a bottom side thereof, a first gasket and a second gasket disposed within the first gasket, such that a vacuum chamber is defined between the first gasket, the second gasket, the bottom side of the base, and a mounting surface on which the base is configured to be mounted. The release valve is in fluid communication with the vacuum chamber. Ambient air at atmospheric pressure is permitted to enter the vacuum chamber in response to actuation of the release valve.

Drill stand

An impact power tool includes a motor, an output shaft to which a tool bit is attachable for performing work on a workpiece, and an impact mechanism disposed between the motor and the output shaft for converting a continuous torque output from the motor to discrete pulses of torque upon the output shaft, the impact mechanism including a cylinder assembly, a cavity defined within the cylinder assembly containing a hydraulic fluid, and a collapsible member having a first end and a second end opposite the first end. The collapsible member is maintained in a shape coinciding with that of the cavity by fitment within the cavity, with the first and second ends being disconnected from each other. The collapsible member is collapsible to compensate for thermal expansion of the hydraulic fluid during operation of the impact mechanism.

Impact tool with collapsible member to compensate for thermal expansion

A cart for carrying a cut-off saw having a saw blade. The cart includes a frame with upper and lower portions, a wheel arm pivotably coupled to the lower portion about a first axis, and a rear wheel assembly coaxial with the first axis and coupled to the frame and the wheel arm. The cart includes a front wheel coupled to an end of the wheel arm opposite the rear wheel assembly, an adjustment lever pivotably coupled to the upper portion about a second axis, and a link having a first end pivotably coupled to the adjustment lever and spaced from the second axis, and a second end pivotably coupled to the wheel arm between the first axis and the front wheel. Pivoting the adjustment lever about the second axis pivots the wheel arm about the first axis to adjust a vertical position of the front wheel relative to the upper portion.

Saw cart

A concrete vibrator includes a frame, a strap coupled to the frame, a main housing supported upon the frame, and an electric motor coupled to the main housing. The concrete vibrator further comprises a flexible shaft having a first end coupled to the motor and an opposite, second end. The concrete vibrator further comprises a vibrator head coupled to the second end of the shaft, the vibrator head configured to receive torque from the motor and the shaft to cause the vibrator head to vibrate. The concrete vibrator is operable in a backpack configuration in which the strap is used to carry the concrete vibrator with the frame in a vertical orientation, and in a briefcase configuration in which the frame is supportable in a horizontal orientation.

Concrete vibrator for use in backpack and stationary configurations

A mud mixer includes a tool body, and an electric motor supported by the tool body that is configured to rotate a mixing element about a rotation axis. The mud mixer further includes a first handle fixedly coupled to the tool body and extending from the tool body along a handle axis, a plane angled relative to the rotation axis and defined as an extension of the handle axis, and a second handle rotatably coupled to the tool body about the rotation axis and extending from the tool body in a direction parallel to the plane.

Mud mixer

A concrete vibrator includes a housing, a handle, an electric motor, a flexible shaft, a vibrator head, and a battery pack. The handle extends from the housing. The electric motor is coupled to the housing. The flexible shaft has a first end coupled to the motor and an opposite, second end. The vibrator head is coupled to the second end of the shaft. The vibrator head is configured to receive torque from the motor and the shaft to cause the vibrator head to vibrate. The battery pack is coupled to a battery receptacle defined on the housing. The battery pack is configured to provide electric power to the electric motor to drive the motor and the shaft. The concrete vibrator is operable in a briefcase configuration in which the handle is used to carry the concrete vibrator with the housing supported in a horizontal orientation.

Concrete vibrator for use in a briefcase configuration

A power tool includes a housing with a motor housing portion and a drive housing portion, a handle extending from the housing and defining a gap between the handle and the housing, a motor located within the motor housing portion having a motor output shaft, a fan coupled to the motor output shaft, a battery to provide power to the motor, a trigger coupled to the handle and manipulable to energize the motor, a spindle extending within the drive housing portion and driven by the motor output shaft to rotate about an axis, and a fluid delivery system configured to supply a fluid to the spindle. The housing includes an air intake opening and a deflector to inhibit the fluid from entering the housing through the air intake opening, and rotation of the fan draws an airflow into the housing through the air intake opening.

Rotary power tool

Concrete vibrator

A cut-off saw configured to remove material from a workpiece, the cut-off saw includes a motor, a blade, a drive assembly, a handle, and a coating. The blade is capable of removing material from the workpiece upon contact between the blade and the workpiece. The drive assembly is coupled to the motor and the blade and is configured to transmit torque from the motor to the blade. The handle is configured to be grasped by a user, and includes a surface and a first material having a first surface resistivity. The coating covers at least a portion of the handle. The coating is configured to distribute static electricity away from the surface. The coating is made of a second material having a second surface resistivity less than the first surface resistivity.

Static discharge mitigation of power tools

An interface for a battery pack and an electrical combination. The interface may include a battery-receiving portion configured to receive a battery pack and including a cavity. The cavity is defined by a pair of sidewalls with rails defining a groove between the rails and a lower surface of the cavity. The rails are stepped or angled along a battery insertion axis and are configured to guide the sliding engagement of a battery pack within the battery-receiving portion.

Battery pack interface

A clutch mechanism is used in a rotary power tool having a motor. The clutch mechanism includes an input member to which torque from the motor is transferred and an output member co-rotatable with the input member. The output member defines a rotational axis. A cam surface is formed on one of the input member or the output member. First and second compression springs are carried by the other of the input member or the output member for co-rotation therewith. A follower has a circular cross-sectional shape and is biased against the cam surface by the first and second compression springs. In response to relative rotation between the input member and the output member, the cam surface displaces the follower along a line of action coaxial or parallel with each of the first and second compression springs. The line of action does not intersect the rotational axis.

Clutch mechanism for rotary power tool

A rotary power tool includes a main housing and a transmission housing coupled to the main housing. The transmission housing includes a bearing pocket open to a front of the transmission housing and defined at least partially by a radially inward-extending flange. The rotary power tool also includes an output shaft and a bearing positioned within the bearing pocket adjacent and in abutting relationship with the radially inward-extending flange for rotatably supporting the output shaft in the transmission housing. The rotary power tool also includes a radially outward-extending flange on the output shaft that radially overlaps at least a portion of the bearing on an opposite side of the bearing as the radially inward-extending flange. A line of action of an axial reaction force applied to the output shaft is directed to the transmission housing via the radially outwardly-extending flange, the bearing, and the radially inward-extending flange.

Impact tool

A core drill includes a housing and a battery pack attachable to the housing for powering the core drill. The core drill is configured to be operated while being carried on a drill stand. The core drill is configured to be operated independently of and detached from the drill stand. The core drill is configured to be carried by an operator's hand while the core drill is not being carried on the drill stand.

Growing community of inventors

Lisbon, WI, United States of America

Mitchell Carlson