James L Zappanti

Title: Innovations by James L Zappanti

Introduction

James L Zappanti is an accomplished inventor based in Trinidad, Colorado. He has made significant contributions to the field of underground mine communication systems. With a total of three patents to his name, Zappanti's work focuses on enhancing safety and communication in mining environments.

Latest Patents

Zappanti's latest patents include a current limiter circuit and a medium frequency mine communication system. The current limiter circuit is designed to ensure that electrical equipment in underground mining operations does not create incendiary conditions. This system utilizes a series arrangement of a current trip circuit, a redundant current trip circuit, and a current limiting field effect transistor controlled by a feedback control amplifier. The medium frequency mine communication system comprises multiple repeaters and medium frequency radios, including mobile, portable, and personal-carried radios. These devices are coupled to electrical conductors and natural waveguides in the earth using tuned loop antennas. Messages transmitted by the radios are carried to the repeaters, which amplify and retransmit the messages at two different frequencies. This allows for effective communication between miners and surface base stations.

Career Highlights

Zappanti is currently employed at Stolar, Inc., where he continues to innovate in the field of mine communication systems. His work has been instrumental in improving safety protocols and communication efficiency in mining operations.

Collaborations

Some of Zappanti's notable coworkers include Larry G Stolarczyk and Kurt A Smoker. Their collaborative efforts contribute to the advancement of technology in the mining sector.

Conclusion

James L Zappanti's innovative patents and dedication to improving mine communication systems highlight his significant impact on the industry. His work continues to enhance safety and efficiency in underground mining operations.