This inventor holds 3 USPTO granted patents. Top assignees: Tenneco Automotive Inc., Tenneco, Inc., Tenneco Automotive Bldg., Tennessee Gas Pipeline Company. Active years: 1988-2000.
Company Filing History:
1 out of 40 
1 out of 1 
1 out of 18 Years Active: 1988-2000
Title: Roger D. Hanson: Innovator in Automotive Muffler Technology
Introduction
Roger D. Hanson, an inventive mind hailing from Jackson, MI, has made notable contributions to automotive engineering through his innovative inventions. With a total of three patents to his name, he has focused primarily on advancements in muffler design, enhancing the performance and efficiency of exhaust systems in internal combustion engines.
Latest Patents
One of Roger's latest innovations is a straight-through muffler featuring a conically-ended output passage. This invention introduces a novel muffler design that includes an outlet tube with a funnel-shaped element, which connects to an expansion chamber, effectively quieting and tuning the exhaust flow. The geometry of the different chambers plays a critical role in smoothing the exhaust transition from the inlet tube to the outlet tube, leading to enhanced engine performance.
In addition to this, Roger developed a muffler with drain holes, uniquely designed to address liquid accumulation. This flat, box-like muffler, crafted from sturdy metal housing sections, features drainage holes that facilitate the expulsion of any liquid collecting within the muffler. By incorporating a special sound attenuation structure through passages and support channels, this design enhances sound quality while maintaining functionality.
Career Highlights
Roger D. Hanson has demonstrated a commitment to innovation throughout his career, particularly during his time at Tenneco Automotive Inc. and Tenneco, Inc. His role in these companies enabled him to focus on automotive advancements, allowing him to explore innovative solutions for muffler technology.
Collaborations
Throughout his career, Roger has collaborated with talented professionals, including Dale E. Sterrett and William E. Hill. These partnerships have contributed to the successful development and implementation of his patents, showcasing the value of teamwork in achieving innovative outcomes in engineering.
Conclusion
Roger D. Hanson stands out as a significant inventor in the automotive industry, committed to enhancing muffler technology. His patents not only reflect his innovative spirit but also contribute valuable advancements to the efficiency and functionality of exhaust systems in vehicles. As he continues to innovate, Roger's legacy in engineering will undoubtedly impact future developments in automotive technology.