Milwaukee Electric Tool Corporation

Vasil Zhmendak

Sean T Kehoe

Ryan James Denissen

Jingyuan Liang

Peter J Davies

Charles K Cooksey

Samuel J Krohlow

Michael C Reed

Kyle J Radovich

Wyatt R Silha

Donald J Truettner

William D Stoneback

Omid Shirazi

Chien-Chih Chao

Nathan J Gustafson

Allen Lukowitz

David J Gaulke

A drain cleaner assembly including a base unit having a housing, a first portion of a drive arrangement supported by the housing, and a motor coupled to the drive arrangement, where the motor is operable to selectively drive the drive arrangement. A drum unit is removably coupled to the base unit. The drum unit includes a rotatable drum, a cable stored within the drum and selectively extendable out of the drum and into a drain, and a second portion of the drive arrangement, where the second portion of the drive arrangement includes a driven shaft extending along an axis of rotation of the rotatable drum, where the driven shaft is rotatably fixed to the rotatable drum, and wherein the first portion of the drive arrangement is configured to drive the driven shaft and the rotatable drum when the drum unit is coupled to the base unit.

Drain cleaner

A battery pack charging system includes a battery pack interface configured to receive a battery pack, a charging circuit coupled to the battery pack interface to provide charging current to the battery pack interface, and a controller coupled to the charging circuit and configured to control supply of charge current to the battery interface. The battery pack charging system further includes a power supply circuit coupled to the charging circuit, a filter circuit coupled to the power supply circuit and including a nanocrystalline ferrite common mode choke, and an alternating current plug configured to connect the filter circuit to an alternating current power source.

Charger with nanocrystalline ferrite choke

A drain cleaner assembly including a base unit including a housing, a drive arrangement positioned within the housing, and a motor coupled to the drive arrangement and supported by the housing, the motor operable to selectively drive the drive arrangement, and a drum unit removably coupled to the base unit. The drum unit includes a drum that engages the drive arrangement when the drum unit is coupled to the base unit to rotate the drum, a cable stored within the drum and selectively extendable out of the drum and into a drain, and an outer casing at least partially surrounding the drum, wherein the drum is rotatable within the outer casing, wherein the drive arrangement includes a coupling arrangement between the motor and the drum, the drive arrangement extending through the outer casing.

A battery pack charger includes a first circuit region, a second circuit region, an input voltage measuring circuit, a temperature measurement device, and a controller. The controller is configured to measure an input voltage to the charger using the input voltage measuring circuit, measure a temperature of the second circuit region using the temperature measurement device, and estimate a temperature of the first circuit region based on the input voltage to the charger and the measured temperature of the second circuit region. The controller is further configured to select one of a plurality of correlations between the temperature of the second circuit region and the temperature of the first circuit region based on the input voltage to the charger to estimate the temperature of the first circuit region. After the temperature of the first circuit region has been estimated, one or more control operations associated with the charger can be performed.

Temperature estimation and control systems, methods, and devices for a battery pack charger

A drain clearing air gun includes a housing defining a main body, a handle positioned on a first end of the main body, and a nose positioned on a second end of the main body. A tank is at least partially positioned within the housing and includes a chamber for receiving pressurized air. A motor is positioned within a main body of the housing, and a pump is positioned within the main body of the housing and operatively coupled to the motor. The pump is driven by the motor to pump air into the tank. A pressure gauge is supported by the housing and includes an automatic shutoff feature. The pressure gauge is in fluid communication with the tank. When a predetermined pressure within the tank is reached the automatic shutoff feature is activated to stop the motor.

Drain clearing air gun

A drain cleaner includes a base unit having a housing, a drive arrangement positioned within the housing, and a motor coupled to the drive arrangement and supported by the housing. The motor is operable to selectively drive the drive arrangement. The drain cleaner also includes a drum unit removably coupled to the base unit. The drum unit has a drum that engages the drive arrangement when the drum unit is coupled to the base unit to rotate the drum, and a cable stored within the drum and selectively extendable out of the drum and into a drain.

A drain cleaner includes a base unit having a frame, a drum rotatably supported by the frame, a cable at least partially disposed within the drum, a motor supported by the frame for driving rotation of the drum and the cable, and a handle for guiding the cable into a drain. The handle includes a body, a passage formed in the body, and an actuator supported by the body. The passage receives a portion of the cable such that the handle is disposed around the cable and is movable along the cable relative to the base unit. The actuator is in communication with the motor for actuating rotation of the drum.

Drain cleaner with feed handle

A drain clearing air gun includes a housing defining a main body, a handle positioned on a first end of the main body, and a nose positioned on a second end of the main body. A tank is at least partially positioned within the housing and includes a chamber for receiving pressurized air, where the tank has a first portion and a second portion that are coupled together to form the chamber. The first portion is disposed within the nose of the housing and is formed of a first material. The second portion is disposed within the main body of the housing and is formed of a second material that is different than the first material.

Growing community of inventors

Milwaukee, WI, United States of America

Vasil Zhmendak