{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9726640","patent":{"patent_number":"US-9726640","title":"Circuit and method of providing a stable display for eddy current instruments","assignee":null,"inventors":[],"filing_date":"2014-11-21T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["G01N","G01N"],"num_claims":16,"abstract":"A rotary bolt hole eddy current inspection scanner using a differential eddy current probe, the circuitry of the scanner is embodied with a filtering circuit with three filters: FIR (Finite Impulse Response), a low pass filter, and a phase control filter (by means of a Hilbert transform). The result from a scan of a bolt hole is an output signal on an impedance plane exhibiting a “backwards 6” shape of stable size when the scanner changes its rotating rate significantly."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Circuit and method of providing a stable display for eddy current instruments","description":"A rotary bolt hole eddy current inspection scanner using a differential eddy current probe, the circuitry of the scanner is embodied with a filtering circuit with three filters: FIR (Finite Impulse Re","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9726640","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-9726640","citation_suggestion":"Patentable. \"Circuit and method of providing a stable display for eddy current instruments\" (US-9726640). https://patentable.app/patents/US-9726640","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9726640","json":"https://patentable.app/api/llm-context/US-9726640","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:18:02.654Z"}