Black Decker Inc.

Christopher R Walter

Craig Alan Schell

Scott M Forster

Paul S White

Michael P Kunz

Edward Allen Harrison

A position tracking system has a laser transmitter, a control tracker and a layout indicator. The laser transmitter has a laser for emitting a laser beam, a controller controlling the laser, and a motor for rotating the emitted laser beam. The control tracker has a housing, at least two photo diodes disposed on the housing, and a laser assembly for generating a beam to be projected unto a surface. The layout indicator has a housing, and at least two photo diodes disposed on the housing. A network server communicates with at least one of the laser transmitter, the control tracker and the layout indicator.

Positional tracking system and method

A power pack charging system includes a one-way compatible charger arrangement for use with multiple power pack types. In another aspect of the present invention, both of the power pack types can be used in a first charger but only one of the power pack types can be charged in a second charger.

Growing community of inventors

Parkville, MD, United States of America

Christopher R Walter