Mark Lee Hanna

Title: Mark Lee Hanna’s Engineering Innovations

Introduction

Mark Lee Hanna is an inventor based in Saline, Michigan. His work includes inventions for handling ammunition cartridges and inspecting cylindrical workpieces. He is associated with Mectron Engineering Company, Inc., and holds 3 patents.

Latest Patents

Hanna’s patent for an ammunition collator describes a device that receives finished cartridges in a non-oriented condition and arranges them into an aligned stream for manufacturing or packaging. A rotating circular plate uses vanes and perimeter apertures to orient cartridges and release them in alignment. The design also incorporates features intended to improve throughput and reduce damage during handling.

His patent for an eddy current system for workpiece inspection concerns handling and inspecting workpieces with an elongated cylindrical section and an enlarged feature, such as a threaded fastener. Inclined, rotating rollers turn the workpiece near a sensor probe positioned by its head. The rollers can be adjusted between two gaps, enabling the system to rotate the workpiece for inspection and then release it by gravity for further handling.

Career Highlights

The inventions described in Hanna’s patents address practical challenges in automated manufacturing: orienting ammunition cartridges consistently and positioning workpieces for inspection. Both systems combine mechanical handling with controlled movement to support downstream production processes.

Collaborations

Hanna is associated with Mectron Engineering Company, Inc. His listed coworkers include Michael A. Hall and Robert J. Perez.

Conclusion

Mark Lee Hanna’s patented work focuses on improving the handling, alignment, and inspection of manufactured components, reflecting an engineering emphasis on efficient and reliable production systems.