George Melnyk

Title: George Melnyk: Innovator in Ribbon Control Technology

Introduction

George Melnyk is a notable inventor based in Endicott, NY (US). He has made significant contributions to the field of ribbon control technology, holding a total of 3 patents. His innovative designs have advanced the functionality and efficiency of ribbon spooling systems.

Latest Patents

One of Melnyk's latest patents is for a "Ribbon tension control with dynamic braking and variable current sink." This invention features a pair of ribbon spools that are independently operated by respective motors. These motors rotate in one direction until the ribbon end is reached, then switch to the opposite direction. The spools alternate between functioning as feed and take-up spools, while the motors serve as drive and drag motors. To eliminate excess drag motor cogging, Melnyk's system employs dynamic braking of the drag motor. It includes drag circuitry with rectifier bridge circuitry and a constant current sink that is adjustable for drawing predefined selectable levels of current from the windings of the drag motor. The motors used are polyphase, permanent magnet, stepper motors, which generate alternating back emf signals in their windings.

Another significant patent is the "Chopper drive control circuit." In this design, a coil is connected to a voltage source via a switch that is enabled by a drive signal of fixed duration. The drive current in the coil is terminated by a chopper circuit if it reaches a predetermined peak level before the end of a preselected rise time interval. The chopper circuit is inhibited from operation until the end of the rise time interval, allowing the drive current to decay. This innovative approach adjusts the total amount of energy supplied to the actuator, ensuring efficient operation.

Career Highlights

George Melnyk is currently employed at International Business Machines Corporation (IBM). His work at IBM has allowed him to develop and refine his innovative technologies, contributing to the company's reputation for cutting-edge solutions.

Collaborations

Throughout his career, Melnyk has collaborated with notable coworkers such as James F Driftmyer and Robert F Jessen. These collaborations have fostered an environment of innovation and creativity, leading to advancements in their respective fields.

Conclusion

George Melnyk is a distinguished inventor whose work in ribbon control technology has made a significant impact. His patents reflect a commitment to innovation and efficiency