Robert Boschgmbh

Robert Bosch Tool Corporation

James B Stevens

Harald Krondorfer

David S Pozgay

Arturo Gonzalez

Erick Higashi

Tim Truesdale

Jeff Schreiner

Charlie Ren

Martin Feldman

Deborah Brown

Ramon Tam

Andreas Bell

Marco Braun

Wolfgang Adamczak

Philippe Van Den Bogaert

Zaal-Azhar Alias

Vincent Hong

Selvakumar Kannan

Zaidi Ahmad Mohd

This disclosure relates to a switch guard that prevents inadvertent pressing by a user of the direction-control switch of a handheld power tool. On each side of the housing of the tool, a pair of protrusions extend from the housing, one just to the front of the switch and one just to the rear. Whether the power tool is being operated right- or left-handed, the protrusions prevent a user's thumb or forefinger from inadvertently pressing the direction-control switch while the tool is in operation.

Switch guard for a power tool

Audio device

A power tool includes a housing, a motor enclosed within the housing, and a work element configured to be driven by the motor. A trigger is movably secured to the housing for controlling power to the motor. A locking assembly is provided that includes a lock-OFF mechanism configured to lock the trigger in the OFF position and a lock-ON mechanism configured to lock the trigger in the ON position.

Portable power tool with trigger switch, trigger release and lock-on mechanism combination

A routing machine comprises a base unit and a motor unit releasably connected to the base unit. The base unit includes a handle and a first electrical connector. The motor unit includes an electric motor, motor control circuitry configured to energize or de-energize the electric motor, and a second electrical connector connected to the motor control circuitry. The second electrical connector is configured to engage the first electrical connector when the motor unit is properly seated on the base unit. An electric switch is positioned on the base unit. The motor control circuitry is configured to deliver electric power to the electric motor when the switch is in an on position. The motor control circuitry is configured to not provide electric power to the electric motor when the switch is in an off position.

Modular router with base power switch

The invention relates to an auxiliary device for a portable tool, comprising a receptacle () for a motor-operated portable tool () having an output shaft (), and comprising a drive train () which has a tool receptacle (), to be opened and closed by rotation, and which can be connected to the output shaft () of the motor-operated portable tool () via a coupling device. Provision is made for the auxiliary device () for the portable tool to have an anti-rotation locking means () acting on the drive train ().

Auxiliary device for a hand-held power tool

Growing community of inventors

Oak Park, IL, United States of America

James B Stevens