{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9742199","patent":{"patent_number":"US-9742199","title":"Contactless power supply system and contactless extension plug","assignee":null,"inventors":[],"filing_date":"2013-08-19T00:00:00.000Z","publication_date":"2017-08-22T00:00:00.000Z","cpc_codes":["H02J","H02J","H02J","H02J","H02J"],"num_claims":9,"abstract":"A contactless power supply system includes a first power transmission coil, a plug power reception coil, a plug power transmission coil, and a first power reception coil. The first power transmission coil and the plug power reception coil are configured to satisfy a relational equation of (L2a/L1)1/2=G1/K1=N2a/N1, where L1 represents a self-inductance of the first power transmission coil, L2a represents a self-inductance of the plug power reception coil, N1 represents a winding number of the first power transmission coil, N2a represents a winding number of the plug power reception coil, K1 represents a coupling coefficient of the first power transmission coil and the plug power reception coil, and G1 represents a voltage conversion gain of the voltage applied to the plug power transmission coil relative to the voltage applied to the first power transmission coil."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Contactless power supply system and contactless extension plug","description":"A contactless power supply system includes a first power transmission coil, a plug power reception coil, a plug power transmission coil, and a first power reception coil. The first power transmission ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9742199","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9742199","citation_suggestion":"Patentable. \"Contactless power supply system and contactless extension plug\" (US-9742199). https://patentable.app/patents/US-9742199","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9742199","json":"https://patentable.app/api/llm-context/US-9742199","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:14:58.593Z"}