This inventor holds 2 USPTO granted patents. Top assignee: Deere & Company. Active years: 1976-1980.
Location History:
- Ottumwa, IA (US) (1976)
- Wynot, NE (US) (1980)
Company Filing History:
Years Active: 1976-1980
Title: Marlan John Rolfes: Innovator in Agricultural Technology
Introduction
Marlan John Rolfes is a notable inventor based in Ottumwa, Iowa, recognized for his contributions to agricultural technology. He holds 2 patents that showcase his innovative approach to enhancing the functionality of agricultural machinery.
Latest Patents
Rolfes' latest patents include a "Power transmission control for a pull-type implement" and a "Tractor-implement control system." The first patent describes a pull-type forage harvester equipped with a feed roll transmission that can shift between forward, reverse, and neutral modes. This system utilizes a pair of identical single-acting hydraulic cylinders, ensuring that any inadvertent pressure changes do not affect the transmission's shifting capabilities. The second patent outlines a control system for an agricultural tractor that powers a pull-type forage harvester. This system features hydraulic coupling elements and control valves that allow the operator to manage various functions of the harvester from within the tractor's cab.
Career Highlights
Marlan Rolfes is currently employed at Deere & Company, a leading manufacturer of agricultural machinery. His work at Deere has allowed him to apply his innovative ideas to real-world agricultural challenges, contributing to the efficiency and effectiveness of farming operations.
Collaborations
Rolfes has collaborated with Donald W. Demorest, a fellow innovator in the field. Their partnership has likely fostered the development of advanced agricultural technologies that benefit the industry.
Conclusion
Marlan John Rolfes is a significant figure in agricultural innovation, with patents that enhance the functionality of farming equipment. His work at Deere & Company and collaborations with other inventors underscore his commitment to advancing agricultural technology.