Company Filing History:
6 out of 143 
2 out of 2 
1 out of 7 
Years Active: 2002-2019
Title: Brian J Callahan: Innovator in Engine Technology
Introduction
Brian J Callahan is a notable inventor based in San Diego, CA, with a focus on advancements in engine technology. He holds a total of 9 patents, showcasing his contributions to the field of opposed-piston engines. His innovative designs aim to enhance engine performance and efficiency.
Latest Patents
One of Callahan's latest patents involves open exhaust chamber constructions for opposed-piston engines. This configuration reduces exhaust cross-talk caused by mass flow between cylinders, particularly during scavenging and charging phases. The design includes barriers between adjacent cylinders that fire sequentially, optimizing the engine's operation. Another significant patent focuses on the port edge shape with continuous curvature for improved ring-port interaction and flow area. This design minimizes piston ring clipping while optimizing flow area, contributing to better engine performance.
Career Highlights
Throughout his career, Callahan has worked with prominent companies such as Achates Power, Inc. and Mp3.com, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in engine technology.
Collaborations
Callahan has collaborated with talented individuals in the industry, including Matthew John Dimeo and Brian Mason Degenhardt. These partnerships have further enriched his work and contributed to his success as an inventor.
Conclusion
Brian J Callahan's contributions to engine technology through his patents and collaborations highlight his role as an innovator in the field. His work continues to influence advancements in engine design and performance.