John H Broadhurst

Title: John H. Broadhurst: Innovator in Flashlight Technology and Explosive Detection

Introduction

John H. Broadhurst is a notable inventor based in Golden Valley, MN (US). He holds a total of 9 patents that showcase his innovative contributions to technology, particularly in the fields of lighting and safety.

Latest Patents

Among his latest inventions is the "Constant or Variable Brightness Flashlight." This advanced flashlight features a semi-conductor boost/buck controller that is electrically connected to an inductor. The controller is designed to cyclically charge the inductor and deliver stored energy to the flashlight lamp in cycles that repeat at a rate between 10,000 and one million cycles per second. Additionally, a photo-responsive feedback circuit is integrated to modulate the current to the lamp, ensuring optimal brightness based on the balance of potential between a standard potential and the feedback circuit.

Another significant patent is the "Luggage Explosive Detector." This method detects predetermined amounts of oxygen and nitrogen in luggage containers, serving as a screening technique for identifying potential explosives. The invention involves generating and accelerating a beam of monoenergetic protons directed at a boron target. The process includes rapidly subjecting the proton beam to an energy degrading medium, allowing for selective degradation of the protons' energy. The resulting neutron beam is then analyzed to determine the presence of specific levels of nitrogen and oxygen, enhancing security measures in luggage screening.

Career Highlights

Throughout his career, John H. Broadhurst has worked with various companies, including Sysmed, Inc. His innovative spirit and technical expertise have led to significant advancements in the fields he has engaged with.

Collaborations

John has collaborated with notable individuals in his field, including Marvin B. Bacaner. Their joint efforts have contributed to the development of groundbreaking technologies.

Conclusion

John H. Broadhurst's contributions to flashlight technology and explosive detection exemplify his innovative spirit and dedication to enhancing safety and functionality in everyday devices. His patents reflect a commitment to advancing technology for the benefit of society.