{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9835217","patent":{"patent_number":"US-9835217","title":"Coil spring modeling apparatus and method utilizing a torsion detection to control an actuator unit","assignee":null,"inventors":[],"filing_date":"2015-02-12T00:00:00.000Z","publication_date":"2017-12-05T00:00:00.000Z","cpc_codes":["G09B","G09B"],"num_claims":8,"abstract":"A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Coil spring modeling apparatus and method utilizing a torsion detection to control an actuator unit","description":"A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-p","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9835217","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-9835217","citation_suggestion":"Patentable. \"Coil spring modeling apparatus and method utilizing a torsion detection to control an actuator unit\" (US-9835217). https://patentable.app/patents/US-9835217","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9835217","json":"https://patentable.app/api/llm-context/US-9835217","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:15:36.506Z"}