{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531742","patent":{"patent_number":"US-8531742","title":"Sheet detecting device, double feed determining device, and image reading apparatus using the same","assignee":null,"inventors":[],"filing_date":"2011-06-27T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N","H04N","H04N","H04N","H04N","H04N"],"num_claims":13,"abstract":"A sheet detecting device including: an ultrasound generator; a transmitting side opening, which includes a first opening and a second opening to transmit the ultrasound; a transmitting side propagation unit, which is connected to the ultrasound generator and each of the transmitting side openings; a receiving side opening, which includes a third opening and a fourth opening to receives the ultrasound transmitted from the first opening and the second opening; an ultrasound receiver; a receiving side propagation unit, which is connected to each of the receiving side openings and the ultrasound receiver; and a first determining unit, wherein a first distance from the ultrasound generator to the first opening is different from a second distance from the ultrasound generator to the second opening, and wherein a third distance from the ultrasound receiver to the third opening is different from a fourth distance from the ultrasound receiver to the fourth opening."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Sheet detecting device, double feed determining device, and image reading apparatus using the same","description":"A sheet detecting device including: an ultrasound generator; a transmitting side opening, which includes a first opening and a second opening to transmit the ultrasound; a transmitting side propagatio","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531742","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-8531742","citation_suggestion":"Patentable. \"Sheet detecting device, double feed determining device, and image reading apparatus using the same\" (US-8531742). https://patentable.app/patents/US-8531742","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531742","json":"https://patentable.app/api/llm-context/US-8531742","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:59:09.677Z"}