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For the Inventor, By the Inventor

Dwight, IL, United States of America

Norval J Wiemken

This inventor holds 10 USPTO granted patents. Top assignee: Caterpillar Inc.. Active years: 1996-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Norval J Wiemken. Retrieved from https://idiyas.com/inventor/norval-j-wiemken

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

USPTO Granted Patents = 10

% Patents Active = 70.0

Average Co-Inventor Count = 3.0

ph-index = 7

Forward Citations = 96(Granted Patents)


Company Filing History:

goldMedal10 out of 9,804 
 
Caterpillar Inc.
 patents

Years Active: 1996-2007

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10 patents (USPTO):Explore Patents
1. 7278593 - Common rail fuel injector (2007-10-09),
2. 7077381 - Desensitizing armature air gap to component distortion in a fuel injector (2006-07-18),
3. 6955114 - Three way valve and electro-hydraulic actuator using same (2005-10-18),
4. 6951204 - Hydraulic fuel injection system with independently operable direct control needle valve (2005-10-04),
5. 6431472 - Fuel injector nozzle with outwardly opening check valve (2002-08-13),
6. 5901686 - Fluid seal for cyclic high pressures within a fuel injector (1999-05-11),
7. 5871155 - Hydraulically-actuated fuel injector with variable rate return spring (1999-02-16),
8. 5870995 - Space saving high pressure fluid supply clamp for a fuel injector (1999-02-16),
9. 5682861 - Fluid seal for cyclic high pressures within a fuel injection (1997-11-04),
10. 5499612 - Dual-function clamping assembly adapted for a hydraulically-actuated (1996-03-19),

Title: Norval J Wiemken: Innovator in Fuel Injector Technology

Introduction

Norval J Wiemken is a notable inventor based in Dwight, IL (US), recognized for his contributions to fuel injector technology. With a total of 10 patents to his name, Wiemken has made significant advancements in the field, particularly in the design and functionality of common rail fuel injectors.

Latest Patents

One of Wiemken's latest patents is for a common rail fuel injector that features a three-way control valve. This innovative design controls the flow of high-pressure fuel to a fuel cavity for injection. The control valve transitions between an off position and an on position, ensuring that fuel injection occurs only when the valve is properly seated. This mechanism prevents premature fuel injection and enhances the reliability of the injector. Another significant patent addresses the issue of internal distortion in fuel injectors. Wiemken's design includes a deflection cavity that mitigates the effects of deformation caused by high pressures, thereby improving the consistency and predictability of fuel injector performance.

Career Highlights

Wiemken is currently employed at Caterpillar Inc., where he continues to develop cutting-edge technologies in fuel injection systems. His work has been instrumental in enhancing the efficiency and reliability of fuel injectors, which are critical components in modern engines.

Collaborations

Throughout his career, Wiemken has collaborated with talented individuals such as Alan Ray Stockner and Ye Tian. These partnerships have contributed to the innovative solutions he has developed in the field of fuel injection technology.

Conclusion

Norval J Wiemken's contributions to fuel injector technology have made a lasting impact on the industry. His innovative designs and patents reflect his commitment to advancing engineering solutions in this critical area.

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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