David H Johnston is a notable inventor based in Redondo Beach, California. He has made significant contributions to the field of innovation, holding a total of four patents. His work primarily focuses on extendable channel units that enhance the functionality and aesthetics of electrical installations.

Latest Patents

One of Johnston's latest patents is for an extendable channel unit containing a conductor. This innovative design features a pair of telescopically arranged conduits that can extend and retract. The unit includes an intermediate section of the conductor that accommodates the relative extension of the conduits. This section may have a sinuous configuration or expandable coils, allowing for flexibility in installation. The channel unit can be installed along walls or other surfaces, providing a decorative cover for the conductor connected to an operated device. Additionally, it can be integrated into an extendable ramp for use in doorways, enhancing accessibility. The design includes joints that allow for rotation around the conductor axis, enabling the unit to navigate corners and form right angles along straight walls.

Career Highlights

Throughout his career, David H Johnston has worked with various companies, including Poly-disc Systems, Inc. His experience in the industry has contributed to his innovative designs and patent applications.

Collaborations

Johnston has collaborated with notable individuals such as Pravin K Patel and Richard Alan Clark, further enriching his professional journey.

Conclusion

David H Johnston's inventive spirit and practical designs have made a lasting impact in the field of electrical installations. His patents reflect a commitment to innovation and functionality, showcasing his expertise as an inventor.

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