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For the Inventor, By the Inventor

Salem, SD, United States of America

Leon G Feterl

This inventor holds 11 USPTO granted patents. Top assignees: Core Industries, LLC, Sos Consolidated, Inc.. Active years: 1976-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Leon G Feterl. Retrieved from https://idiyas.com/inventor/leon-g-feterl

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

Calculating rank
USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 1.0

ph-index = 6

Forward Citations = 123(Granted Patents)


Company Filing History:

goldMedal6 out of 14 
 
Core Industries, LLC
 patents
silverMedal5 out of 7 
 
Sos Consolidated, Inc.
 patents

Years Active: 1976-1994

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11 patents (USPTO):Explore Patents
1. 5351568 - Rotary speed changing apparatus (1994-10-04),
2. 5184715 - Mechanical drive for dual conveyor system (1993-02-09),
3. 4730742 - Apparatus for lifting an elongate member (1988-03-15),
4. 4712922 - Material mixing apparatus (1987-12-15),
5. 4553898 - Swingably mounted truck hopper (1985-11-19),
6. 4457746 - Apparatus for centrifugal separation (1984-07-03),
7. 4220433 - Sweep auger drive system (1980-09-02),
8. 4002147 - Bale handling apparatus (1977-01-11),
9. 3999520 - Livestock feeding apparatus (1976-12-28),
10. 3972541 - Load coupler for trailers (1976-08-03),
11. 3939553 - Method of manufacturing a trailer frame structure (1976-02-24),

Title: Leon G Feterl: Innovator in Mechanical Engineering

Introduction

Leon G Feterl is a notable inventor based in Salem, South Dakota, with a remarkable portfolio of 11 patents. His contributions to mechanical engineering have led to innovative solutions that enhance the functionality of various systems.

Latest Patents

Among his latest inventions is the "Rotary Speed Changing Apparatus." This invention features a speed-changing apparatus with a housing that mounts a series of inwardly directed, circumferentially disposed teeth, resembling a ring gear. The design includes a hub that rotatably receives a first shaft, which eccentrically mounts several elongate follower arms. Each follower arm is attached to the shaft at one end, while the other end has a tooth designed to engage the circumferentially disposed teeth. The housing also incorporates a base plate that is securely attached to a second shaft. This innovative mechanism allows rotary motion to be transferred between the first shaft and a second rotatable member through a system of pins and arms.

Another significant invention is the "Mechanical Drive for Dual Conveyor System." This system is designed to drive two screw conveyors from a single power source. It includes a primary drive that supplies power to the first conveyor and a secondary drive that utilizes a pair of gearboxes to provide power to the second conveyor from the primary drive. This invention streamlines operations and enhances efficiency in conveyor systems.

Career Highlights

Throughout his career, Leon G Feterl has made significant contributions to the field of mechanical engineering. He has worked with various companies, including Core Industries, LLC and Sos Consolidated, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas.

Collaborations

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Conclusion

Leon G Feterl's inventive spirit and engineering expertise have led to significant advancements in mechanical systems. His patents reflect a commitment to innovation and efficiency in engineering design.

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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