{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8520869","patent":{"patent_number":"US-8520869","title":"Piezoelectric acoustic transducer","assignee":null,"inventors":[],"filing_date":"2011-03-28T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R","H04R"],"num_claims":20,"abstract":"Provided is a piezoelectric type loudspeaker capable of reproducing a high sound pressure in a limited space, without increasing a voltage applied to a piezoelectric element in a bass range. A plurality of piezoelectric diaphragms are disposed in parallel, and coupled to one another in a thickness direction of the diaphragms via a coupling member, and a polarity of the piezoelectric element and the applied voltage are defined so as to cause deformations in opposite directions from each other. One diaphragm includes an edge on a periphery, and operates as a sound wave radiation surface. At least one diaphragm is fixed to a housing side via a fixing member. Series resistance is connected to the piezoelectric element on the piezoelectric diaphragm fixed to the housing side."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Piezoelectric acoustic transducer","description":"Provided is a piezoelectric type loudspeaker capable of reproducing a high sound pressure in a limited space, without increasing a voltage applied to a piezoelectric element in a bass range. A plurali","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8520869","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-8520869","citation_suggestion":"Patentable. \"Piezoelectric acoustic transducer\" (US-8520869). https://patentable.app/patents/US-8520869","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8520869","json":"https://patentable.app/api/llm-context/US-8520869","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:36:59.422Z"}