Racine, WI, United States of America

David D Flegel

This inventor holds 44 USPTO granted patents, plus 2 CIPO patents, primarily in Electrical Switch Technology. Top assignees: Reliance Controls Corporation, Reliance Time Controls, Inc., Reliance Time Control, Inc.. Active years: 1988-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David D Flegel. Retrieved from https://idiyas.com/inventor/david-d-flegel

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


% Patents Active = 86.4


Average Co-Inventor Count = 1.1

ph-index = 16

Forward Citations = 658(Granted Patents)


Location History:

  • Racine, WI (US) (1988 - 2014)
  • Wind Point, WI (US) (2016)

Company Filing History:


Years Active: 1988-2016

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Areas of Expertise:
Transfer Switch
Interlock Assembly
Electrical Panel
Power Inlet
Circuit Breaker
Portable Power Source
Energy Usage Data
Vibration Absorbing Mount
Generator Cord
Meter Panel
Electrical Box Cover
Rocker-Type Switch
44 patents (USPTO):Explore Patents

Title: David D. Flegel: Innovator and Patent Holder from Racine, WI

Introduction: David D. Flegel, hailing from Racine, Wisconsin, has established himself as a notable inventor with an impressive portfolio of 44 patents. His contributions to the field of electrical engineering and switch technology highlight his innovative spirit and problem-solving abilities.

Latest Patents: Among his latest inventions is a "3-motion interlock for aligned switches." This interlock mechanism is designed to control two aligned switches connected to alternate power supplies. It features a moveable interlock member that operates between two interlock positions, effectively managing the operational state of both switches to ensure safety and efficiency. In his other significant patent, the "Electrical box cover," Flegel developed a unique design that includes a body to secure multiple electrical connections, complemented by a door with an innovative hinge system. This design not only simplifies access but enhances the functionality of electrical installations.

Career Highlights: Throughout his career, David D. Flegel has worked with reputable companies, including Reliance Controls Corporation and Reliance Time Controls, Inc. His experience in these organizations has significantly contributed to his development as an inventor and patent holder.

Collaborations: Flegel has collaborated with various professionals in his field, including colleagues such as Neil A. Czarnecki and Michael O. Flegel. These partnerships reflect a collective drive towards innovation and excellence in engineering solutions.

Conclusion: David D. Flegel's contributions to the world of inventions and patents demonstrate his commitment to advancing technology and improving safety in electrical systems. His work continues to inspire future inventors and engineers in the industry.

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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