Location History:
- Newark, DE (US) (1976)
- Parkersburg, WV (US) (1981 - 2002)
Company Filing History:
Years Active: 1976-2002
Title: The Innovations of Robert Lee Rackley
Introduction
Robert Lee Rackley is a notable inventor based in Parkersburg, WV (US). He has made significant contributions to the field of materials science, particularly in the development of innovative products that enhance everyday items. With a total of 14 patents to his name, Rackley's work has had a lasting impact on various industries.
Latest Patents
Among his latest patents, Rackley has developed a process for making extruded brush monofilaments. These monofilaments are designed with split ends, making them ideal for forming toothbrush bristles that have flagged or feathered tips. Each monofilament features a plurality of internal fusion lines and at least four voids, which account for 5 to 20% of the cross-sectional area. The preferred diameter of these monofilaments ranges from 0.0025 to 0.012 inches, and they can have either a hexalocular or octalocular configuration. The manufacturing process involves extruding multiple thermoplastic polymeric streams and utilizing high-speed cutting blades to create the split ends.
Another significant invention by Rackley is the moisture stable tuftstring carpet. This innovation provides carpet assemblies with a moisture stable backing substrate and elongated pile articles. Each pile article consists of a moisture stable support strand bonded to 'U' shaped bundles of multifilament yarn. The design allows for various backing substrates and support strands to be utilized, enhancing the versatility of the product.
Career Highlights
Rackley is currently associated with E.I. DuPont De Nemours and Company, where he continues to innovate and develop new materials. His work has not only advanced the company's product offerings but has also contributed to the broader field of material science.
Collaborations
Throughout his career, Rackley has collaborated with notable colleagues, including Charles Fletcher Nelson and Robert K. Anderson. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
Robert Lee Rackley is a distinguished inventor whose contributions to material science have resulted in numerous patents and innovative products. His work continues to influence various industries, showcasing the importance of creativity and collaboration in the field of invention.