John P Grajewski

Title: Innovations by John P Grajewski: A Pioneer in Coin Sensing Technology

Introduction

John P Grajewski is an accomplished inventor based in Palmyra, Wisconsin, known for his significant contributions to coin sensing and sorting technologies. With a portfolio of seven patents, Grajewski's innovations have advanced the capabilities of coin recognition, enhancing accuracy and efficiency in the industry.

Latest Patents

Among his notable inventions, Grajewski's recent patents include a sophisticated method and sensor for sensing coins for valuation. This coin sensor identifies coins by size while effectively discriminating invalid coins. The design encompasses a coin track where coins pass in a single file, featuring an illumination source for optimal visibility. An optical detector, equipped with a telecentric lens, ensures each coin is viewed with consistent apparent size, irrespective of its distance from the lens. Additionally, the sensor assembly integrates inductive sensors and a Hall effect sensor to further validate coin authenticity.

Another recent invention focuses on methods and apparatus for detecting coin denomination and other parameters. This coin sorting apparatus incorporates a light source, a coin moving member made of light-transmissive material, and a coin path insert for effective coin size calculation. With advanced sensors to analyze coin composition and multiple processors for data analysis, Grajewski's innovations have set new standards in the field of coin detection and sorting technologies.

Career Highlights

Throughout his career, John P Grajewski has been associated with prominent organizations such as De La Rue Cash Systems Inc. and General Electric Company. His work in these companies has allowed him to collaborate on developing groundbreaking technologies that enhance coin processing and validation systems.

Collaborations

Grajewski has had the privilege of collaborating with esteemed colleagues Robert L Zwieg and Thomas P Adams, with whom he has shared knowledge and expertise in the field of coin technology. These partnerships have driven further innovation and refinement of his groundbreaking inventions.

Conclusion

John P Grajewski's dedication to innovation in coin sensing and sorting technologies has resulted in multiple patents that reflect his expertise and creativity. His inventions not only streamline coin processing but also enhance the standard of security against counterfeit coins. Grajewski's contributions continue to influence the industry, showcasing the impact of innovative thinking on modern technology.