John E Levreault

Title: The Innovations of John E Levreault

Introduction

John E Levreault is an accomplished inventor based in Boxford, MA (US). He holds three patents that showcase his innovative contributions to automotive technology. His work primarily focuses on enhancing vehicle audio systems and reducing noise pollution from combustion engines.

Latest Patents

One of Levreault's latest patents is the "Remote turn-on circuit for automobile audio amplifier." This system allows for the installation of a radio audio amplifier in a vehicle at a location remote from the vehicle radio. It intelligently senses voltage in the radio speaker wires to turn the amplifier on and off, providing convenience and efficiency for users. Another significant patent is the "Active noise conditioning system." This system is designed for use with combustion engine exhaust systems. It features a controller that receives an exhaust noise signal and various feedback signals to produce an anti-noise signal. An amplifier enhances this anti-noise signal, which is then processed by a wave generator to create an audio anti-noise signal. This output is strategically placed near the exhaust pipe, where it acoustically couples with the exhaust noise to effectively cancel it out.

Career Highlights

Throughout his career, John E Levreault has worked with notable companies, including Tenneco Automotive Inc. His experience in the automotive industry has significantly influenced his innovative designs and patents.

Collaborations

Levreault has collaborated with talented individuals such as J Clay Shipps and Lars P Allfather. Their combined expertise has contributed to the development of advanced automotive technologies.

Conclusion

John E Levreault's contributions to automotive innovation are evident through his patents and collaborations. His work continues to impact the industry, making vehicles more efficient and enjoyable for users.