This inventor holds 5 USPTO granted patents, plus 1 CIPO patent. Top assignees: Shanghai Ele Manufacturing Corp., Shanghai Ele Manufacturing Co., Ltd, Shanghai Ele Mfg. Corp.. Active years: 2006-2011.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 4 
1 out of 1 
1 out of 1 Years Active: 2006-2011
Title: Innovations of Chengli Li in Ground-Fault Circuit Interrupters
Introduction
Chengli Li is a notable inventor based in Shanghai, China. He has made significant contributions to the field of electrical safety through his innovative designs of ground-fault circuit interrupters (GFCIs). With a total of 5 patents to his name, Li's work focuses on enhancing the functionality and reliability of GFCI devices.
Latest Patents
Li's latest patents include a ground-fault circuit interrupter with a circuit condition detection function. This GFCI device features a leakage current detection circuit, a disconnect mechanism, a reset mechanism, a circuit condition detection and control circuit, and a selection switch. The disconnect mechanism is controlled by a first SCR, which is activated by the leakage current detection circuit. The circuit condition detection and control circuit consists of two control circuits that work together to simulate leakage current and ensure the device operates safely.
Another significant patent is an improved ground-fault circuit interrupter that incorporates a moveable lock plate controlled by a relay. This design prevents the device from being reset when the relay is not energized, thereby enhancing safety. The relay is powered by a power supply circuit connected in series with a solenoid, which disconnects the input and output sides of the GFCI upon detecting leakage current. This innovative approach ensures that the device cannot be reset if there is a malfunction or incorrect wiring.
Career Highlights
Chengli Li has worked with several prominent companies, including Shanghai Ele Manufacturing Corporation and Shanghai Meihao Electric Inc. His experience in these organizations has allowed him to refine his skills and contribute to the development of advanced electrical safety devices.
Collaborations
Li has collaborated with talented individuals such as Long Zhang and HuaDao Huang, who have contributed to his projects and innovations in the field of electrical engineering.
Conclusion
Chengli Li's contributions to the development of ground-fault circuit interrupters demonstrate his commitment to enhancing electrical safety. His innovative patents reflect a deep understanding of electrical systems and a dedication to improving device reliability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile