Company Filing History:
Years Active: 1977-1983
Title: Jack E Greenwell: Innovator in Motor Drive and Alternator Technology
Introduction
Jack E Greenwell is a notable inventor based in Reno, NV (US), recognized for his contributions to motor drive circuits and starter motor-alternator apparatuses. With a total of 3 patents, Greenwell has made significant advancements in the field of electrical engineering.
Latest Patents
One of his latest patents is a motor drive circuit that features an inverter circuit designed for use with loads such as motors and transformers. This innovative inverter includes separate precharge circuitry for precharging the commutating capacitor, clamping diodes to limit voltage on the inverter power elements, and steering diodes for coupling the motor or transformer to the SCRs. These components work together to ensure reliable commutation at low motor speeds and voltage levels.
Another significant patent is the starter motor-alternator apparatus, which serves both starting and generating functions for internal combustion or gas turbine engines. This apparatus utilizes the major electromagnetic circuit for dual purposes, featuring a main rotor winding that acts as both a starter armature winding and an alternator field winding. The design allows for efficient operation during both starter-motor and alternator-generator phases.
Career Highlights
Throughout his career, Jack E Greenwell has worked with prominent companies such as Lear Avia Corporation and Lear Motors Corporation. His experience in these organizations has contributed to his expertise in developing innovative electrical solutions.
Collaborations
Greenwell has collaborated with notable individuals in the industry, including his coworker Alexander Prokop. Their joint efforts have likely fostered advancements in their respective fields.
Conclusion
Jack E Greenwell's contributions to motor drive and alternator technology highlight his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to improving electrical systems, making him a significant figure in the realm of inventions.