Claire E Rojohn

Title: Claire E. Rojohn and Her Transmission Innovation.

Introduction

Claire E. Rojohn is an inventor associated with Denver, Iowa, and Deere & Company. Her work includes an invention focused on improving transmission design by providing more speed and range changes with fewer gears and control components.

Latest Patents

Rojohn is credited with 1 patent: “Multi-Range Synchronized Transmission and Housing Therefor.” The patent describes a collar-shift transmission that uses intermeshing gear sets across a main shaft, an output shaft, and two intermediate shafts. Collar-shift elements are placed on the main shaft and one intermediate shaft, while paired gear arrangements help increase the available speed changes and reduce the number of gears and controls required.

The design also describes synchronizer clutches positioned close to the main clutch to limit momentum transfer. Its sectional housing accommodates a repositionable hydraulic pump, and an optional housing section can contain a planetary gear system to add speed ranges. A hollow main shaft can also accommodate a power take-off shaft connected directly to the power source.

Career Highlights

Rojohn’s patent reflects an engineering approach centered on combining a broad range of transmission speeds with a comparatively compact arrangement of gears, shafts, and shifting components. The disclosed housing and optional planetary gear section further support adaptable transmission configurations.

Collaborations

The supplied information identifies Howard Thomas Uehle and David L. Mixdorf as Rojohn’s coworkers. It does not specify their individual contributions to the patented invention.

Conclusion

Claire E. Rojohn’s patented transmission design brings together efficient gear arrangements, synchronized shifting, and adaptable housing features to expand transmission capabilities while limiting component complexity.