Company Filing History:
Years Active: 1995-2001
Title: The Innovative Contributions of Donald W. Lilljedahl
Introduction
Donald W. Lilljedahl is a notable inventor based in Pittsfield, NH (US). He has made significant contributions to the field of lamp technology, holding a total of 2 patents. His work has been instrumental in enhancing the functionality and efficiency of lighting solutions.
Latest Patents
Lilljedahl's latest patents include a "Locking clip for a lamp base having first, second and third portions." This innovative locking clip is designed to fix a base to the end of a glass bulb. The clip features a body with a first portion, a middle portion, and an end portion. The middle portion is scyphate, or cup-shaped, and defines a plane. The first portion extends away from the plane at an angle of approximately 5 degrees. The end portion connects to the middle portion via a reentrant section and extends away from the plane at an angle of about 20 degrees. This design includes a centrally located aperture in the reentrant section to facilitate the bending of the end portion during final welding.
Another significant patent is the "Lamp base inner shell." This invention includes a washer-like base with a cylindrical wall attached at one end. The cylindrical wall features a threaded portion and several cut-out portions that define tabs with inwardly extending indentations. At least one cut-out portion extends to the inner shell base, which is crucial for electrically connecting and securing a lamp base shell to a lamp tube. This inner shell design aids in the automated production of high-intensity arc discharge lamps.
Career Highlights
Lilljedahl is currently employed at Osram Sylvania Inc., where he continues to innovate in the lighting industry. His work has contributed to advancements in lamp technology, making significant impacts on production efficiency and product reliability.
Collaborations
Throughout his career, Lilljedahl has collaborated with notable colleagues, including Howard D. Taggart and Robert B. Dolan. These partnerships have fostered a creative environment that has led to the development of innovative lighting solutions.
Conclusion
Donald W. Lilljedahl's contributions to lamp technology through his patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence the lighting industry, showcasing the importance of innovation in everyday products.