This inventor holds 4 USPTO granted patents. Top assignees: Vapor Corp., Other. Active years: 1979-1989.
Company Filing History:
1 out of 89 
3 out of 834,307 Years Active: 1979-1989
Title: Jack A Russell: Innovator in Step Motor Control and Traction Load Meter Systems
Introduction
Jack A Russell is a notable inventor based in Libertyville, IL (US). He has made significant contributions to the field of motor control and measurement systems, holding a total of 4 patents. His work focuses on enhancing the efficiency and reliability of mechanical drives and electric motors.
Latest Patents
One of Russell's latest patents is a method and apparatus for controlling stepmotor mechanical drives. This innovation has a broad range of applications, including fuel control for gas-turbine engines and operating powered automatically controlled doors for mass transit vehicles. The method involves analyzing motor winding currents during the application of controlled voltage pulses, which allows for evaluating shaft torque conditions at the motor load without requiring return or feedback signals from the driven load. This digital technique provides a reliable and economical means for detecting stepmotor output shaft position and loading.
Another significant patent is the traction load meter system, designed to display information regarding the current energizing electric motors that drive locomotives. This system includes a current-to-frequency converter that provides an output signal corresponding to the current drawn by the motors. The electronic logic circuitry processes this signal to indicate whether the locomotive is in power or braking mode, the amount of current being drawn, and whether this amount exceeds the continuous rated current for the motors. The system also features a display panel for the engineer, providing crucial operational information.
Career Highlights
Throughout his career, Jack A Russell has worked with various companies, including Vapor Corp. His experience in the industry has allowed him to develop innovative solutions that address real-world challenges in motor control and measurement.
Collaborations
[This section has been skipped due to space constraints.]
Conclusion
Jack A Russell's contributions to the fields of step motor control and traction load measurement systems highlight his innovative spirit and technical expertise. His patents reflect a commitment to advancing technology in practical applications.