Location History:
- Anderson, IN (US) (1984 - 1987)
- Carmel, IN (US) (1991)
Company Filing History:
Years Active: 1984-1991
Title: Innovations by Roger W. Kellams
Introduction
Roger W. Kellams is an accomplished inventor based in Anderson, IN (US). He holds a total of 3 patents that showcase his expertise in electrical engineering and innovative design. His work primarily focuses on advancements in ignition systems and electrical connectors.
Latest Patents
One of his notable inventions is an ignition coil designed for developing spark plug firing voltages. This ignition coil features a magnetic current that comprises an axially extending core, which joins axially spaced annular parts. The core and parts can be formed of iron particles in a binder of electrical insulating material. A primary winding is disposed about the core, while a secondary winding is positioned around the primary winding. Additionally, an axially extending circular part made of magnetic material is strategically placed to provide air gaps with the outer surfaces of the annular parts. This design enhances the capacitance of the secondary winding and ensures that the total stored magnetic energy remains stable despite variations in air gap length.
Another significant patent is the overmolded electrical connector. This connector features a flexible spring finger contact encased in rigid plastic material, allowing the spring finger to flex freely. The assembly includes a terminal block, a cover, and a terminal with the flexible spring finger. The terminal is assembled to the terminal block, ensuring that the spring finger is located in a cavity within the block. The cover is then attached, and the entire assembly is overmolded using injection molding techniques. The design incorporates a tongue and groove mechanism to prevent molding material from entering the cavity containing the spring finger, while crush ribs engage a tab portion of the terminal extending from the cavity.
Career Highlights
Roger W. Kellams is currently employed at GM Global Technology Operations, Inc., where he continues to contribute to innovative projects in the field of electrical engineering. His work has significantly impacted the development of reliable ignition systems and electrical connectors.
Collaborations
Throughout his career, Kellams has collaborated with talented individuals such as Ronnalee House and Albert Anthony Skinner. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Roger W. Kellams is a notable inventor whose contributions to electrical engineering have led to significant advancements in ignition systems and electrical connectors. His innovative designs and collaborative spirit continue to inspire progress in the field.