{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9803761","patent":{"patent_number":"US-9803761","title":"Flapper check valve bumper","assignee":null,"inventors":[],"filing_date":"2016-04-12T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["G05D"],"num_claims":19,"abstract":"A check valve includes a housing, a flap, a hinge, at least one post, and at least one tubular bumper. The hinge allows the flap to rotate relative to the housing between a fully open position and a closed position. The at least one post is disposed at or near the periphery of the housing supporting the hinge and extending axially relative to the housing from the housing. The at least one tubular bumper is movable with the flap and configured to contact the at least one post when the flap pivots to the fully open position."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Flapper check valve bumper","description":"A check valve includes a housing, a flap, a hinge, at least one post, and at least one tubular bumper. The hinge allows the flap to rotate relative to the housing between a fully open position and a c","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9803761","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-9803761","citation_suggestion":"Patentable. \"Flapper check valve bumper\" (US-9803761). https://patentable.app/patents/US-9803761","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9803761","json":"https://patentable.app/api/llm-context/US-9803761","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:48:42.008Z"}