{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9706291","patent":{"patent_number":"US-9706291","title":"Vehicle headrests","assignee":null,"inventors":[],"filing_date":"2016-04-04T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R","H04R"],"num_claims":30,"abstract":"A vehicle headrest includes a passive directional acoustic device. The passive directional acoustic device includes an acoustic driver, a pipe acoustically coupled to the acoustic driver. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiation is characterized by a volume velocity. The pipe and the opening are configured so that the magnitude of the volume velocity is substantially constant along the length of the pipe."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Vehicle headrests","description":"A vehicle headrest includes a passive directional acoustic device. The passive directional acoustic device includes an acoustic driver, a pipe acoustically coupled to the acoustic driver. The pipe inc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9706291","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-9706291","citation_suggestion":"Patentable. \"Vehicle headrests\" (US-9706291). https://patentable.app/patents/US-9706291","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9706291","json":"https://patentable.app/api/llm-context/US-9706291","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:39:02.903Z"}