Southampton, MA, United States of America

Francis Tokarski

This inventor holds 1 USPTO granted patent. Top assignee: Coltec Industries, Inc.. Active years: 1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Francis Tokarski. Retrieved from https://idiyas.com/inventor/francis-tokarski

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 6.0

ph-index = 1

Forward Citations = 13(Granted Patents)


Company Filing History:


Years Active: 1998

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1 patent (USPTO):Explore Patents

Title: The Innovations of Francis Tokarski

Introduction

Francis Tokarski is an accomplished inventor based in Southampton, MA (US). He is known for his innovative contributions to the field of engineering, particularly in the design of pumps. His work has led to advancements that improve the efficiency and reliability of fuel systems.

Latest Patents

One of Tokarski's notable patents is for a variable displacement vane pump with vane tip relief. This invention features a vaned rotor that is adjustably contained within a cam member, allowing for rotation between fuel inlet and fuel discharge arcs. The design includes adjacent vanes that form enclosed fuel bucket areas, which are expanded and supplied with fuel during the fuel inlet arc and contracted to discharge fuel in the fuel discharge arc. To enhance fuel circulation, Tokarski's design incorporates a central recess at each vane tip and/or a central groove in the cam surface. This innovation prevents trapping, stagnation, and overheating of fuel, which can lead to pump failure.

Career Highlights

Francis Tokarski has made significant strides in his career, working with Coltec Industries, Inc. His expertise in pump design has positioned him as a valuable asset in the engineering community. His patent reflects his commitment to improving fuel system technology and addressing common issues faced in the industry.

Collaborations

Throughout his career, Tokarski has collaborated with notable colleagues, including Robert Peck and Martin T Books. These partnerships have contributed to the development of innovative solutions in engineering.

Conclusion

Francis Tokarski's contributions to the field of engineering, particularly through his patent for a variable displacement vane pump, demonstrate his innovative spirit and dedication to improving technology. His work continues to influence the industry and inspire future advancements.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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