Black Decker Inc.

David Beers

John Charles Vanko

Jason K Leh

Craig Alan Schell

Qiang J Zhang

Thomas Jay Bodine

Joao Norona

Uday S Deshpande

Michael Kenneth Forster

Samuel G Woods

Spencer G Maid

Bhanuprasad V Gorti

Kathy E DiPasquale

Robert Alan Usselman

William F Gallagher

Garrett Patrick McCormick

Larry T Albert

Paul S White

Robert Bradus

Thomas R Kaye, Jr

Jason R Melvin

Philip T Miller

Ross Arthur Billings

Michael P Kunz

Floyd E Moreland

Dennis A Bush

Zollie W Privett, Jr

Timothy J Seeley

Xiang Wang

John P Cunningham

David Muti

Andrew Joseph Birkel

William G Kalbfleisch

Sandip D Patel

Paul J Korick

Garrett P Mccormick

Larrry T Albert

Zoran Mihailovic

Jason Lee

Dennis J Gulbin, Jr

Daniel Amos Odean Hegarty

Kevin Wang

Qiang Zhang

Daniel AO Hegarty

Andrew Birkel

William Kalbfleisch

Mike Forster

Uday Deshpande

A power tool (e.g., a pneumatic tool) includes a tool housing, a motor disposed in the tool housing, and a switch coupled to the tool housing and configured to control operation of the motor. A light unit includes a light unit housing removably coupleable to the tool housing. The light unit includes a light disposed in the light unit housing, a controller, and a sensor. The sensor is configured to sense actuation of the switch, and the controller is configured to cause the light to turn on when the sensor senses that the switch is actuated.

Power tool and light unit

A protective redundancy circuit is provided for a power tool having an electric motor. The protective redundant subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module that controls the switching operation of the motor switch; and a protective control module that monitors switching operation of the motor switch and disables the power tool when the switching operation of the motor switch fails. In the context of an AC powered tool, the switching operation of the motor switch is correlated to and synchronized to the waveform of the AC input signal. During each cycle or half cycle, the motor control module introduces a delay period before closing the motor switch and the protective control module determines the operational status of the motor switch by measuring the voltage across the motor switch during the delay period.

Protective redundant subsystem for power tools

A control system is provided for use in a power tool. The control system includes: a rotational rate sensor having a resonating mass and a controller electrically connected to the rotational rate sensor. The rotational rate sensor detects lateral displacement of the resonating mass and generates a signal indicative of the detected lateral displacement, such that the lateral displacement is directly proportional to a rotational speed at which the power tool rotates about an axis of the rotary shaft. Based on the generated signal, the controller initiates a protective operation to avoid further undesirable rotation of the power tool. The controller may opt to reduce the torque applied to shaft to a non-zero value that enables the operator to regain control of the tool.

Power tool anti-kickback system with rotational rate sensor

A portable band saw includes a serviceable/replaceable bumper system for allowing the band saw to be easily repaired if damaged from being dropped. An auxiliary handle is adjustably mounted to the band saw and is releasable from its position if subjected to a large force so as to avoid damage to the handle and tool housing. An adjustable guide shoe includes a toolless adjustment. The front and rear section of the band saw are disposed on opposite sides of a polymeric field case. Compression rods are used to isolate compression forces from the polymeric field case. An electric box assembly including a plastic component box is disposed between the field case and a front section of the band saw. A crash guard is mounted adjacent to the field case and includes a sight guide along an edge thereof and a rear blade guard formed integrally therewith.

Portable band saw

A vacuum electronic power tool sense system senses the operation of a power tool that is plugged into an onboard power outlet and the vacuum source is automatically operated to facilitate user clean-up of debris generated by use of the power tool. A delay period can be utilized to maintain the vacuum source is an on state for a predetermined period of time after the power tool is turned off.

Vacuum electronic power tool sense

A vacuum electronics system is provided including an electronic water sense circuit for sensing the water level and preventing the vacuum source from operating when the water level approaches the vacuum filter.

Vacuum electronic water sense circuit

An overspeed protection subsystem is provided for a power tool having an electric motor. The overspeed protection subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module interfaced with the motor switch to control switching operation of the motor switch; and an overspeed detection module that determines rotational speed of the motor and disables the power tool when the rotational speed of the motor exceeds a threshold.

Redundant overspeed protection for power tools

A vacuum electronic power tool sense system senses the operation of a power tool that is plugged into an auxiliary outlet box and the vacuum source is automatically operated to facilitate user clean-up of debris generated by use of the power tool. The auxiliary outlet box can be removably mounted to the vacuum housing.

Outlet box for power tool sense

A vacuum electronic switch detection system allows multiple user selectable vacuum modes to be chosen with only one micro-controller input available for performing the multiple selectable modes. The switch detection system provides multiple voltage ratio control signals indicative of multiple switch position possibilities.

Vacuum electronic switch detection system

A motor control module designed to control operation of a plurality of different motors in a plurality of different tools a power tool uses an electronic clutch in the module in conjunction with a mechanical clutch in the tool to protect the tool against an overload event. The module is adapted to implement methods to provide aural and/or tactile feedback to a tool user as a warning of an impending or current fault condition in the tool. The module can prevent power from inadvertently turning on either after an overload event has cleared with the tool plugged in and its power switch on, or after plugging in the tool within the power switch on. The control module is adapted to provide torque control for the power tool, to estimate tool motor temperature and to inform a tool user when a servicing need in the tool is required.

Control and protection methodologies for a motor control module

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Dallastown, PA, United States of America

David Beers