{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9621025","patent":{"patent_number":"US-9621025","title":"Backflow preventing device, power conversion apparatus, motor driver, and refrigerating and air-conditioning apparatus","assignee":null,"inventors":[],"filing_date":"2013-07-02T00:00:00.000Z","publication_date":"2017-04-11T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M","H02M"],"num_claims":18,"abstract":"A backflow preventing device includes a backflow preventing element that is connected between a power supply and a load and that prevents electric current from flowing backward from the load side toward the power supply side, a commutating device that performs a commutation operation for causing the electric current to flow to a commutation path connected in parallel with the backflow preventing element, and a controller that sets a time for performing the commutation operation and causes the commutating device to perform the commutation operation based on the set time. The backflow preventing device has a plurality of the commutation paths and has, for example, elements with small current-carrying capacities disposed in the commutation paths to achieve cost reduction and to cope with, for example, failures, thereby allowing for enhanced reliability for reducing recovery electric current."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Backflow preventing device, power conversion apparatus, motor driver, and refrigerating and air-conditioning apparatus","description":"A backflow preventing device includes a backflow preventing element that is connected between a power supply and a load and that prevents electric current from flowing backward from the load side towa","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9621025","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-9621025","citation_suggestion":"Patentable. \"Backflow preventing device, power conversion apparatus, motor driver, and refrigerating and air-conditioning apparatus\" (US-9621025). https://patentable.app/patents/US-9621025","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9621025","json":"https://patentable.app/api/llm-context/US-9621025","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:20:35.832Z"}