Cyber-mation, Inc.

Picturetel Corporation

Edward C Woodman

Steven L Potts

Hong Wang

Russell Siggelkoe

Adam Reed

William F Ellersick

Directional microphone

Movement of a tool relative to a workpiece along each one of a plurality of axes is controlled by digitally providing a train of digital pulses to an electromechanical actuator and by digitally modulating the pulse widths (without an intervening conversion to analog form) so that electrical energy is carried in the pulse train at rates which will cause the actuator to tend to produce an intended sequence of speeds and positions.

Controller for multiple-axis machine

A two-axis cutting machine for cutting a workpiece along a desired cutting path, has a frame for holding the workpiece, a rail fixed to the frame, a beam arranged to move along the rail and having a pair of driving points spaced apart along the axis of the beam, a cutting tool arranged to move along an axis of the beam, an elongated flexible drive means having portions engaged respectively at the two driving points, a carrier mechanism for carrying a drive section of the drive means, and for translating a force applied on the drive section into a pair of resulting forces directed parallel to the rail and applied respectively at the two driving points, and a beam drive motor mounted on the beam for exerting a force on the drive member, whereby the resulting forces move the beam along the rail, while maintaining a constant angle between the beam axis and the rail.

Two-axis cutting machine using a plasma arc torch or the like

Growing community of inventors

Newburyport, MA, United States of America

Edward C Woodman