Merrillville, IN, United States of America

Keith J Hallam

This inventor holds 5 USPTO granted patents. Top assignee: Pullman Incorporated. Active years: 1977-1980.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keith J Hallam. Retrieved from https://idiyas.com/inventor/keith-j-hallam-ep9kicho

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 = 1.8

ph-index = 3

Forward Citations = 63(Granted Patents)


Company Filing History:


Years Active: 1977-1980

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5 patents (USPTO):Explore Patents

Title: Innovations by Keith J Hallam

Introduction

Keith J Hallam is a notable inventor based in Merrillville, IN (US). He has made significant contributions to the field of railway technology, holding a total of 5 patents. His work focuses on enhancing the safety and efficiency of passenger rail systems.

Latest Patents

Among his latest patents is the "Car coupling arrangement for railway passenger cars." This innovative coupler arrangement features a self-centering coupler shank that allows for limited horizontal and vertical swinging movement about a spherical bearing structure. The design includes first and second shock-absorbing mechanisms that are sequentially effective, improving the overall performance of rapid transit passenger cars. Another significant patent is the "Combination door and emergency stairway exit." This unit operates as a conventional rapid transit door, facilitating movement between cars. It also incorporates an auxiliary door inner frame that pivotally mounts a staircase, which can be rotated and lowered to the ground, allowing passengers to safely alight from the vehicle.

Career Highlights

Keith J Hallam is currently employed at Pullman Incorporated, a company known for its innovations in the railway industry. His work at Pullman has allowed him to develop and refine technologies that enhance passenger safety and comfort.

Collaborations

Throughout his career, Hallam has collaborated with notable coworkers such as Jack E Gutridge and Willis H Knippel. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Keith J Hallam's contributions to railway technology through his innovative patents demonstrate his commitment to improving passenger rail systems. His work continues to influence the industry and enhance the safety and efficiency of rail travel.

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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