This inventor holds 3 USPTO granted patents. Top assignee: The Black Clawson Company. Active years: 1976-1981.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1976-1981
Title: Innovations of Donald F. Lehman
Introduction
Donald F. Lehman is a notable inventor based in Middletown, OH (US). He has made significant contributions to the field of paper manufacturing through his innovative designs and patents. With a total of 3 patents, Lehman has demonstrated his expertise and creativity in developing advanced screening apparatuses.
Latest Patents
One of Lehman's latest patents is an "Apparatus for Screening Paper Fiber Stock." This invention features a cylindrical screen member with screening perforations that are designed to enhance the flow area on the inlet side compared to the accepts side. The funnel-shaped portion on the inlet side leads to a parallel-sided section, optimizing the screening process. Another significant patent is the "Screening Apparatus," which addresses the torsional forces that can cause failure in screening machines. This design incorporates beam-like cantilevers that extend along the cylinder, providing resistance against twisting forces during operation. Additionally, intermediate reinforcing rings are strategically placed to withstand radial loads, ensuring the durability and efficiency of the screening process.
Career Highlights
Donald F. Lehman is associated with The Black Clawson Company, where he has applied his innovative ideas to improve paper manufacturing technologies. His work has contributed to advancements in the industry, showcasing his commitment to enhancing operational efficiency and product quality.
Collaborations
Throughout his career, Lehman has collaborated with talented individuals such as Derald R. Hatton and David E. Chupka. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions in the field.
Conclusion
Donald F. Lehman's contributions to the paper manufacturing industry through his innovative patents and collaborative efforts highlight his role as a significant inventor. His work continues to influence the field, demonstrating the importance of innovation in advancing technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile