This inventor holds 4 USPTO granted patents. Top assignees: Ford Motor Company Limited, Ford Global Technolgoies, LLC, Siemens Automotive Corporation. Active years: 1995-2000.
Company Filing History:
3 out of 6,167 
1 out of 26,656 
1 out of 541 
Years Active: 1995-2000
Title: David J Hazen: Innovator in Automotive Engineering
Introduction
David J Hazen is a notable inventor based in Ann Arbor, MI (US). He has made significant contributions to the field of automotive engineering, holding a total of 4 patents. His work focuses on improving the efficiency and performance of internal combustion engines.
Latest Patents
One of Hazen's latest patents is a crankcase fluid processing system for automotive engines. This innovative system includes a fluid collector pan that closes the lower ends of the cylinder block into separate bays. It features an evacuation valve for each bay, allowing fluid in the collector compartments to be expelled as the pistons move. This design aims to enhance the power output and fuel economy of the engine. Another significant patent is for an internal combustion engine with stratified charge and tumble motion. This engine design incorporates a tumble control valve located in the intake port, which creates high-velocity airflow. The fuel injected by the fuel injector is entrained into this airflow, establishing regions of varying fuel concentration within the cylinder.
Career Highlights
Throughout his career, David J Hazen has worked with prominent companies in the automotive industry, including Ford Motor Company and Siemens Automotive Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas.
Collaborations
Hazen has collaborated with several talented individuals in his field, including Gordon W Sweetnam and John E Cook. Their combined expertise has contributed to the advancement of automotive technologies.
Conclusion
David J Hazen's contributions to automotive engineering through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, driving innovations that enhance engine performance and efficiency.