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For the Inventor, By the Inventor

Georgetown, KY, United States of America

David Erwin Rennick

This inventor holds 22 USPTO granted patents, primarily in Image Forming Devices. Top assignee: Lexmark International, Inc.. Active years: 1998-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David Erwin Rennick. Retrieved from https://idiyas.com/inventor/david-erwin-rennick

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

USPTO Granted Patents = 22

% Patents Active = 81.8

Average Co-Inventor Count = 4.3

ph-index = 8

Forward Citations = 255(Granted Patents)


Company Filing History:

goldMedal22 out of 3,045 
 
Lexmark International, Inc.
 patents

Years Active: 1998-2013

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Areas of Expertise:
Fuser Module
Media Picking Mechanism
Toner Cartridge
Electrical Connector
Media Input Tray
Coupling Mechanism
Waste Toner Collection
Substrate Sensing
Door Assembly
Exit Roll
Interlocks
Alignment Devices
22 patents (USPTO):Explore Patents
1. 8374535 - Pivoting end cap for a fuser module of an image forming device (2013-02-12),
2. 8257185 - Metal and plastic Oldham coupler with added retraction spline and plastic over molded features (2012-09-04),
3. 8200137 - Fuser assembly including a single biasing member (2012-06-12),
4. 8172220 - Dual shaft media picking mechanism (2012-05-08),
5. 8041253 - Systems and methods to control access to an interior of an image forming device (2011-10-18),
6. 8020860 - Devices and methods for aligning and moving a media sheet within an image forming device (2011-09-20),
7. 7717421 - System and method for sensing a media stack from side of stack and delivery path to stack to detect given stack height (2010-05-18),
8. 7407394 - Electrical connector for an image forming device (2008-08-05),
9. 7386252 - Door panel interlocks for an image forming device (2008-06-10),
10. 7349648 - Securing mechanism for an image forming device module (2008-03-25),
11. 7292820 - Integrated media input tray including electronics (2007-11-06),
12. 7290765 - Exit roll for an image forming device (2007-11-06),
13. 7272351 - Transfer of a media sheet within an image forming device (2007-09-18),
14. 7162182 - Image forming device having a door assembly and method of use (2007-01-09),
15. 7136609 - Movable subunit and two piece cartridge for use in an image forming device (2006-11-14),

Title: Innovations and Contributions of David Erwin Rennick in Image Forming Technology

Introduction: David Erwin Rennick is an accomplished inventor based in Georgetown, Kentucky. With an impressive portfolio of 22 patents, Rennick has significantly contributed to advancements in image forming technology, showcasing his expertise in mechanical design and innovation.

Latest Patents: Among his latest patents are two notable inventions. The first is the "Pivoting end cap for a fuser module of an image forming device," which features a pivotable end cap and a movable entry guide. This design minimizes positional variability within the fuser module, enhancing its performance. The pivoting end cap also boasts a wheel to axle ratio of approximately 18:1, ensuring reduced force variability. The second patent, "Metal and plastic Oldham coupler with added retraction spline and plastic over molded features," describes an advanced Oldham coupler assembly that effectively transfers rotary power between two shafts in a developer unit. This innovative design, which uses a combination of metal and plastic, significantly enhances the stiffness of the drive system, leading to improved performance by mitigating fine line jitter.

Career Highlights: David Rennick's career is marked by his tenure at Lexmark International, Inc., a renowned company specializing in printing and imaging solutions. His dedication to innovation and technology has propelled numerous advancements within the firm.

Collaborations: Throughout his career, Rennick has collaborated with esteemed colleagues, including Larry Steven Foster and Edward Lynn Triplett, further enriching the innovation landscape at Lexmark. Their collective expertise in engineering and design has driven many successful projects and patents related to imaging technology.

Conclusion: David Erwin Rennick's contributions to the field of image forming technology are commendable. His 22 patents reflect a profound commitment to innovation, with solutions that enhance the efficiency and performance of imaging devices. Through his work at Lexmark International, Inc., and collaborations with fellow innovators, Rennick continues to play a pivotal role in shaping the future of printing 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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