logo

For the Inventor, By the Inventor

Spartanburg, SC, United States of America

Donald K Christian

This inventor holds 10 USPTO granted patents. Top assignee: Other. Active years: 1978-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald K Christian. Retrieved from https://idiyas.com/inventor/donald-k-christian

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 = 100.0

Average Co-Inventor Count = 1.1

ph-index = 3

Forward Citations = 31(Granted Patents)


Company Filing History:

goldMedal9 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1978-1985

Loading Chart...
10 patents (USPTO):Explore Patents
1. 4546867 - Coin insert for vending machine (1985-10-15),
2. 4530444 - Separation device for single copy newspaper vendor (1985-07-23),
3. D276170 - Coin mechanism enclosure for a newspaper vendor (1984-10-30),
4. 4421219 - Dual price cam system for totalizing vendor (1983-12-20),
5. 4418836 - Vending machine for newspaper, magazines and the like (1983-12-06),
6. 4411375 - Novel shelf arrangement for a drop shelf vending machine (1983-10-25),
7. 4382499 - Novel totalizer application for newspaper vending machine (1983-05-10),
8. 4304340 - Semi-automatic display release means for single copy periodical vending (1981-12-08),
9. 4284207 - Drop shelf mechanism (1981-08-18),
10. 4112558 - Fabric bulking process (1978-09-12),

Title: The Innovative Contributions of Donald K Christian

Introduction

Donald K Christian is a notable inventor based in Spartanburg, SC (US). He has made significant contributions to the field of vending machine technology, holding a total of 10 patents. His innovative designs focus on enhancing the functionality and reliability of vending machines, particularly in outdoor environments.

Latest Patents

Among his latest patents is a coin insert for vending machines designed to withstand exposure to the weather. This invention features a pivotal flap that deflects moisture from the coin path, ensuring smooth operation. Additionally, it includes a relief in the coin slot that allows for the free fall of horizontally inserted coins. Another notable patent is a separation device for single copy newspaper vendors. This device is attached to the door of a conventional newspaper vending machine and effectively separates the topmost newspaper from a stack after proper coin insertion and door opening. It incorporates a sequentially selective elevator mechanism to ensure that the topmost newspaper is accessible.

Career Highlights

Throughout his career, Donald K Christian has demonstrated a commitment to innovation in vending technology. His patents reflect a deep understanding of user needs and environmental challenges, making his inventions both practical and effective.

Collaborations

Donald has collaborated with various professionals in his field, including his coworker David E Terry. Their combined expertise has contributed to the development of advanced vending solutions.

Conclusion

Donald K Christian's work exemplifies the spirit of innovation in the vending machine industry. His patents not only address current challenges but also pave the way for future advancements in this 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]
Loading…