Douglas S Pearmain

Title: Douglas S Pearmain: Innovator in Building Construction Solutions

Introduction

Douglas S Pearmain is a notable inventor based in Auburn, ME (US), recognized for his contributions to building construction technologies. He holds a total of 4 patents, showcasing his innovative approach to solving practical challenges in the industry.

Latest Patents

Among his latest inventions is a flexible closure system designed for use in building construction. This system effectively seals off and insulates openings in external building walls or roofs where structures such as ducts penetrate. It isolates these structures from the walls or roofs by absorbing vibrations rather than transmitting them. The system comprises an exterior rubber closure sheet and an interior silicone-coated fiberglass fabric closure sheet, both coextensive with the opening. These components are secured to the structure and wall or roof, forming a cavity filled with glass fiber insulation.

Another significant patent is the fire-resistant expansion joint, suitable for both interior and exterior applications. This expansion joint includes a fire barrier made of a fire-resistant inorganic refractory fiber fabric sheet, which supports resilient fire-resistant inorganic refractory fibers. The support sheet can be closed to form a sleeve, and when used externally, it features a weather-resistant cover, such as a bellows or cover plate. In interior applications, a cover plate may be used to bridge the expansion joint, providing continuous flooring and additional fire resistance. The fabric is attached to the adjacent structure using mounting flanges in the form of a bifurcated clamp, enhancing its grip.

Career Highlights

Throughout his career, Douglas has worked with various companies, including the Manville Corporation, where he applied his innovative ideas to real-world challenges. His work has significantly impacted the building construction industry, particularly in enhancing safety and efficiency.

Collaborations

Douglas has collaborated with notable professionals in his field, including Allan R LaRoche and Robert A Butcher. These partnerships have contributed to the development of his innovative solutions.

Conclusion

Douglas S Pearmain's inventive spirit and dedication to improving building construction technologies have led to significant advancements in the industry. His patents reflect a commitment to safety and efficiency, making him a valuable contributor to the field.