Harold M Grinwald

Title: Innovations of Harold M. Grinwald: Pioneering Electromechanical Displays

Introduction

Harold M. Grinwald, an inventive mind based in Big Bend, Wisconsin, has made significant contributions to the field of mechanical and electromechanical displays. With two patents to his name, Grinwald’s work is characterized by innovation and practical applications that enhance visual communication.

Latest Patents

Grinwald's latest patents highlight his creativity and technical prowess. The first patent, "Actuator for Sliding Panel Signs," describes a mechanism whereby sign panels can slide laterally to present a sequence of images. The design employs slat panels mounted on a base plate, with cam followers and gears facilitating the movement. This invention allows for dynamic sign displays that can engage audiences with changing visuals.

His second patent, titled "Electromechanical Character Display," showcases a unique approach to character illumination. It utilizes elongated light distributors, rotatable opaque disks, and a large area light source to control the display of characters, such as numbers. This system is especially valuable in digital clocks, where a synchronous motor manages the display's rotation to reflect the passage of minutes and hours.

Career Highlights

Harold M. Grinwald has established a solid career at Everbrite Electric Signs, Inc. This company is recognized for its innovative signage solutions, and Grinwald’s contributions play a crucial role in its success. His inventive spirit and technical expertise have positioned him as a notable figure within the industry.

Collaborations

Throughout his professional journey, Grinwald has collaborated with talented individuals such as Charles E. Trame. This partnership has further enriched the innovative projects they have undertaken, leading to advancements in signage technology and electromechanical displays.

Conclusion

Harold M. Grinwald stands out as a significant inventor whose work continues to influence the field of mechanical and electromechanical displays. With his innovative patents, he has made valuable contributions to visual communication, enhancing how information is presented to the public. His career at Everbrite Electric Signs, Inc. and collaborations with fellow innovators underscore his role as a pioneer in the industry.