Donald H Walker

Title: The Innovative Contributions of Donald H. Walker

Introduction

Donald H. Walker is a notable inventor based in Winchester, MA (US). He has made significant contributions to the field of retroreflective materials, particularly through his innovative patent. His work has implications for various applications where visibility and safety are paramount.

Latest Patents

Donald H. Walker holds a patent for "Diced retroreflective sheeting." This invention describes retroreflective sheeting that features a plurality of retroreflective cube corner prisms distributed over one of its surfaces. The prisms are arranged in a planar array with multiple zones that have differing angular orientations. This design allows for varying retroreflective brightness when illuminated by a light beam at a high angle of incidence. The zones are small enough to be largely unresolvable by the unaided human eye at expected viewing distances, ensuring that the sheeting appears to have uniform retroreflective brightness when viewed from high angles.

Career Highlights

Donald H. Walker is associated with Avery International Corporation, where he has been able to apply his innovative ideas in a practical setting. His work at the company has allowed him to contribute to advancements in materials that enhance safety and visibility.

Collaborations

One of his notable coworkers is Thomas F. Burke, with whom he has likely collaborated on various projects within the company.

Conclusion

Donald H. Walker's contributions to the field of retroreflective materials exemplify the impact of innovation on safety and visibility. His patent for diced retroreflective sheeting showcases his ability to blend creativity with practical applications.