Florence, SC, United States of America

Henry S Duffee

This inventor holds 6 USPTO granted patents. Top assignees: Five Star Seal Corporation, Bw/ip International, Inc., Other. Active years: 1984-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Henry S Duffee. Retrieved from https://idiyas.com/inventor/henry-s-duffee

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 = 1.8

ph-index = 6

Forward Citations = 83(Granted Patents)


Company Filing History:


Years Active: 1984-1998

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6 patents (USPTO):Explore Patents

Title: The Innovations of Henry S. Duffee

Introduction

Henry S. Duffee, an inventive mind based in Florence, South Carolina, has made significant contributions to mechanical engineering with six patents to his name. His work primarily focuses on the development of advanced sealing technologies that enhance operational efficiency and reliability in various applications.

Latest Patents

Duffee's latest innovations include two groundbreaking patents: the Diametric Plane Split Mechanical Face Seal and the Semi-Cartridge Seal.

The **Diametric Plane Split Mechanical Face Seal** allows for the installation of the seal without the need to disassemble adjacent equipment. This design features stationary and rotating components that can be assembled in corresponding half elements within a split annular holder. The holders can then be engaged around the shaft and secured together. This innovation simplifies the assembly process, allowing it to be done by a single person, even in crowded work areas, thereby enhancing productivity.

The **Semi-Cartridge Seal** incorporates a dual-component design, where the first component consists of an annular holder that supports an annular seal face structure. This structure not only ensures fluid-tight sealing but also centers the seal face relative to the holder, preventing unwanted rotation. The second component includes an annular gland insert that supports a second seal face structure, which is yieldingly biased for optimal performance. Together, these components create a reliable sealing solution that can adapt to various applications.

Career Highlights

Henry S. Duffee's career includes noteworthy positions at companies such as Five Star Seal Corporation. His tenure at reputable firms has allowed him to refine his engineering skills and contribute to pivotal innovations in sealing technologies.

Collaborations

Throughout his career, Duffee has collaborated with talented professionals like Denise M. Ard and James M. Downing. Their teamwork has facilitated the development of innovative solutions that address complex engineering challenges.

Conclusion

Henry S. Duffee's inventive spirit and skillful engineering have led to significant advancements in mechanical seals. With six patents and ongoing contributions to the field, he remains a key figure in the world of innovations, continually striving to improve efficiency and effectiveness in engineering applications.

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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