Letts, IA, United States of America

Delmar D Lewis

This inventor holds 3 USPTO granted patents. Top assignee: Other. Active years: 1983-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Delmar D Lewis. Retrieved from https://idiyas.com/inventor/delmar-d-lewis

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 = 1.2

ph-index = 3

Forward Citations = 20(Granted Patents)


Location History:

  • Letts, IA (US) (1983 - 1984)
  • Muscatine, IA (US) (1985)

Company Filing History:

goldMedal3 out of 834,453 
Other
 patents

Years Active: 1983-1985

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3 patents (USPTO):Explore Patents

Title: Delmar D Lewis: Innovator in Fluid Mixing and Lock Technology

Introduction

Delmar D Lewis is a notable inventor based in Letts, Iowa, known for his contributions to fluid mixing technology and lock mechanisms. With a total of 3 patents, Lewis has made significant advancements that enhance the functionality and efficiency of various systems.

Latest Patents

One of Lewis's latest inventions is an auxiliary sealing system for fluid mixers. This innovative design addresses the common issue of fluid leakage during seal replacement. The internal seal, which is normally spaced away from the wall, can be moved and compressed against the wall to prevent leakage during repairs, eliminating the need to drain the compartment. This invention utilizes a movable carrier and a reversible force-exerting mechanism, such as jack screws, to facilitate the sealing process.

Another significant patent by Lewis is a cutter for cylindrical locks. This rotary tool is designed to be used with a power tool and features cutting blades that remove the annulus surrounding the core of a lock. By exposing the tumbler mechanism, the cutter allows for the tumblers to be actuated by a depressor tool, enabling the lock to be opened even if the key is lost. The design includes a tubular front end that pilots on the lock core, ensuring precision and preventing damage to the tumbler pins.

Career Highlights

Throughout his career, Delmar D Lewis has demonstrated a commitment to innovation and problem-solving. His patents reflect a deep understanding of mechanical systems and a desire to improve existing technologies.

Collaborations

Lewis has collaborated with his coworker, Donald E Lewis, contributing to the development of his inventions and enhancing their practical applications.

Conclusion

Delmar D Lewis's work exemplifies the spirit of innovation in engineering and design. His patents not only address specific challenges but also pave the way for future advancements in fluid mixing and lock technology.

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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