Company Filing History:
Years Active: 1994
Title: David A Grewell: Innovator in Thermoplastic Welding
Introduction
David A Grewell is a notable inventor based in Columbus, OH (US). He has made significant contributions to the field of welding technology, particularly through his innovative patent related to thermoplastic welding. His work has implications for large structures, enhancing the efficiency and effectiveness of welding processes.
Latest Patents
David A Grewell holds a patent for a process that enables long, continuous thermoplastic welds on large structures. This innovative method utilizes a series of tabs in pairs, especially in alternating, overlapping pairs, to achieve resistance heating of a strip material placed in the bond line. The resistance of the tabs is designed to be less than that of the strip material, allowing for effective welding. Additionally, conducting braid-tubes facilitate continuous welding even when the bond line is curved. An alternative method involves using an electromagnetic field to leverage induction heating, employing a wide susceptor to weld a current-conducting substrate while minimizing bulk heating. Notably, the unexpected property of current-conducting braid-tube susceptors allows for induction heating to occur at the center rather than at the edges, enabling the creation of long continuous curved welds.
Career Highlights
David A Grewell is associated with the Edison Welding Institute, Inc., where he applies his expertise in welding technology. His innovative approach has positioned him as a key figure in advancing welding techniques, particularly in thermoplastic applications.
Collaborations
Throughout his career, David has collaborated with notable colleagues, including Robert A Grimm and Marc A St John. These collaborations have contributed to the development and refinement of welding technologies.
Conclusion
David A Grewell's contributions to thermoplastic welding represent a significant advancement in welding technology. His innovative methods and collaborative efforts continue to influence the industry positively.