David L Crawforth

Title: The Innovations of David L Crawforth

Introduction

David L Crawforth is a notable inventor based in Boise, ID, with a strong focus on automation and safety in transportation systems. He holds three patents, contributing significantly to the field with his innovative solutions aimed at improving transit operations.

Latest Patents

Crawforth's latest patent, titled "Transit Car Door System and Operation," introduces a computer-assisted operating system designed for the automation of transit car door panels. This system enhances safety by ensuring that rail movement is restrained unless all passage doorways are securely closed. The technology leverages a programmable logic controller to generate initiating signals for door operations. It allows for both automated and manual input, depending on the situation.

The system utilizes various sensors, such as a panel position sensor and a panel movement sensor, to evaluate the status of door panels effectively. This automated control ensures that movement signals are directed only to doorways experiencing operational issues, thereby enhancing overall efficiency. Additionally, an electrical cam device, which includes a radiant energy emitter and detector, contributes to monitoring the door panel's movement and direction, modulating the output for precise operation.

Career Highlights

Crawforth's career is marked by his association with the Morrison-Knudsen Company, Inc., where he has been pivotal in advancing transit solutions. His engineering background and innovative thinking have placed him at the forefront of automation technology in the transportation industry.

Collaborations

Throughout his career, Crawforth has collaborated with esteemed colleagues, including Frederick E Templeton and Robert F Carter. These partnerships have fostered an environment of innovation, enabling the development of effective transit solutions and enhancing the safety and efficiency of transportation systems.

Conclusion

David L Crawforth's contributions to the field of transit technology through his patents and collaborative efforts highlight the importance of innovation in improving safety and operational efficiency in public transportation. His work not only showcases his inventiveness but also reflects a commitment to advancing the capabilities of current systems in meaningful ways.