Company Filing History:
3 out of 4 
3 out of 8 
3 out of 4 Years Active: 2007-2024
Title: John William Weiss: Innovator in Safety Circuit Technology
Introduction
John William Weiss is a notable inventor based in Oakdale, NY (US), recognized for his contributions to safety circuit technology. With a total of 9 patents to his name, Weiss has made significant advancements in the field of electrical engineering, particularly in the development of circuits that enhance appliance safety.
Latest Patents
Weiss's latest patents include innovative designs such as the Bipolar Triac Short Detection and Safety Circuit. This safety circuit is designed to disrupt power to a heating element of an appliance powered through a solid-state switch, typically a triac, from an AC power source. The circuit detects low resistance conditions by monitoring the current or voltage across the solid-state switch during both the positive and negative half cycles of the AC power line. When a low resistance condition is detected, a fault signal is generated to interrupt power to the heating element, ensuring safety through a crowbar circuit that opens a fuse.
Another significant patent is the Bi-polar Triac Short Detection and Safety Circuit, which focuses on temperature control and safety. This circuit detects the temperature of a PTC heating element and the status of a solid-state switch powered by an AC source. It includes a current sense resistor and a voltage shifting circuit that provides a positive voltage to an analog-to-digital converter during both power voltage half cycles. This technology plays a crucial role in controlling the temperature of the PTC heating element and monitoring the solid-state switch's status.
Career Highlights
Throughout his career, Weiss has worked with various companies, including Weiss Controls, Inc. and Weiss Instruments, Inc. His work has significantly impacted the safety and efficiency of electrical appliances, showcasing his expertise in circuit design and innovation.
Collaborations
Weiss has collaborated with notable individuals in the industry, including Lenny Novikov and Kuang-Pu Liao. These collaborations have contributed to the development of advanced safety technologies in electrical engineering.
Conclusion
John William Weiss is a distinguished inventor whose work in safety circuit technology has made a lasting impact on the industry. His innovative patents and career achievements reflect his commitment to enhancing appliance safety and efficiency.