This inventor holds 5 USPTO granted patents, plus 2 CIPO patents. Top assignee: Deere & Company. Active years: 1976-2003.
Company Filing History:
Years Active: 1976-2003
Title: Innovations of David William Stubben
Introduction
David William Stubben is a notable inventor based in Dubuque, IA (US). He has made significant contributions to the field of engineering, particularly in the development of advanced drive systems and mounting assemblies. With a total of 5 patents to his name, Stubben's work reflects a commitment to innovation and practical solutions in machinery.
Latest Patents
One of Stubben's latest patents is the Hydrostatic Auxiliary Drive System. This invention features a dual path hydrostatic drive system that utilizes an electronic auxiliary drive controller. This controller manages the hydraulic output of left and right variable displacement pumps based on the speed of the main drive wheels and a speed ratio signal. The system operates under three basic boundary conditions: hydraulic pressure, motor speed, and power. Additionally, it includes a clutch mode activation switch that allows for two operational modes, enhancing the versatility of the drive system.
Another significant patent is the Mounting Assembly for a Grader Moldboard. This invention provides a mounting frame equipped with first and second retainers that feature V-shaped notches. These notches work in conjunction with a V-shaped engagement portion on the moldboard's mounting rails. The design includes wear strips that ensure smooth operation and proper positioning, showcasing Stubben's attention to detail and functionality in engineering design.
Career Highlights
David William Stubben is currently employed at Deere & Company, a leading manufacturer in the agricultural and construction machinery sector. His role at the company allows him to apply his innovative ideas and engineering skills to real-world applications, contributing to the advancement of machinery technology.
Collaborations
Throughout his career, Stubben has collaborated with talented individuals such as Dennis A. Brimeyer and Gladys L. Evans. These collaborations have likely enriched his work and fostered a creative environment for innovation.
Conclusion
David William Stubben's contributions to engineering through his patents and work at Deere & Company highlight his role as a significant inventor in the field. His innovative designs continue to impact the machinery industry positively.