Howard E Mitchell

Title: Howard E Mitchell: Innovator in Raise Boring Technology

Introduction

Howard E Mitchell is a notable inventor based in Duncanville, TX (US), recognized for his contributions to the field of raise boring technology. With a total of 7 patents to his name, Mitchell has made significant advancements that enhance the efficiency and effectiveness of raise boring systems.

Latest Patents

Among his latest innovations is the "Raise Boring Head with Retractable Gage Cutters." This invention provides a raise boring system that allows the boring head to be easily and efficiently lowered back through the completed raise hole. The design includes a multiplicity of rolling cutters positioned in saddles firmly affixed to the body of the raise head, which comprise the primary cutting stage. Additionally, a multiplicity of retractable gage cutters located radially outside of the primary cutting stage can be selectively withdrawn inside the primary cutting stage using a hydraulic-pneumatic system. Another significant patent is the "Steep Angle Raise Bit," which is designed to enlarge a pilot hole into a larger diameter hole by disintegrating the surrounding earth formations. This bit features a cutter arrangement that provides a continuous angle bottom configuration ranging from 134 degrees to 60 degrees.

Career Highlights

Howard E Mitchell has made a substantial impact in his field while working at Dresser Industries, Inc. His innovative designs and patents have contributed to advancements in raise boring technology, making processes more efficient and effective.

Collaborations

Mitchell has collaborated with various professionals in his field, including his coworker William C Saxman, to further enhance the development of raise boring technologies.

Conclusion

Howard E Mitchell's contributions to raise boring technology through his innovative patents have significantly advanced the industry. His work continues to influence the efficiency of raise boring systems, showcasing his importance as an inventor.