{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","research_id":"eoa_inverse_innovation_exp12_light_screen_20260805","cell_id":"context_keyed_representation_switching__accounting_auditing","search_lanes":{"direct_problem_and_intervention":{"queries":["portable tank gauge mechanically selected calibration cam tank-specific volume","tank gauging wrong tank calibration table inventory measurement error strapping table","patent tank gauge docking tank identification calibration curve automatic selection"],"source_ids":["SRC1","SRC2","SRC3"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["mechanical liquidometer interchangeable cam calibrated tank gauge patent","patent \"tank contents\" \"cam follower\" gauge mechanical volume","portable gauge interchangeable cam calibration"],"source_ids":["SRC3"],"no_result_note":"Historical searches found portable ullage rods, tank-content gauges, cam-based gauge mechanisms, and strapping tables, but no retained source disclosed their complete passive keyed-collar combination."},"products_practices_and_standards":{"queries":["tank gauging wrong tank calibration table inventory measurement error strapping table","portable tank gauge mechanically selected calibration cam tank-specific volume","keyed docking collar selects cam gauge interlock wrong scale prevention"],"source_ids":["SRC1","SRC4"],"no_result_note":null},"component_combination":{"queries":["patent portable tank level sensor tank identifier connector calibration table interlock","patent gauge multiple calibration cams selector interlock mechanical","site:patents.google.com keyed coupling selects calibration scale gauge"],"source_ids":["SRC2","SRC3","SRC4"],"no_result_note":"No opened retained source combined a shared portable mechanical head, multiple persistent tank-specific cams, tank-port-keyed automatic selection, full-seat indication, and fail-closed output for unknown or partial docking."}},"sources":[{"source_id":"SRC1","title":"UST Inventory Control and Manual Tank Gauging Procedures and Forms","publisher":"United States Environmental Protection Agency","url":"https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=94009OEF.TXT","source_type":"OFFICIAL_GUIDANCE","claims_supported":["Manual tank inventory control converts stick readings to gallons using the correct tank calibration chart.","EPA guidance calls for a calibration chart specific to the tank type and size and emphasizes consistent use of the same chart.","The converted quantity feeds inventory reconciliation, making chart selection consequential."]},{"source_id":"SRC2","title":"US20210255020A1 — Tanker truck fluid level measurement systems and methods","publisher":"Google Patents / United States Patent and Trademark Office patent record","url":"https://patents.google.com/patent/US20210255020A1/en","source_type":"OTHER","claims_supported":["A level-measurement system can maintain a plurality of custom strap charts, one for every tank measured.","Each chart maps liquid level to volume for its particular tank, and manufacturing differences motivate tank-specific calibration.","The system is close functional prior art for routing tank identity and level through a tank-specific map, although it is processor-based rather than passive mechanical routing."]},{"source_id":"SRC3","title":"US2577629A — Storage tank liquid level measuring device","publisher":"Google Patents / United States Patent and Trademark Office patent record","url":"https://patents.google.com/patent/US2577629A/en","source_type":"OTHER","claims_supported":["A portable lightweight mechanical gauge was expressly designed to be carried by an operator from tank to tank.","The gauge obtains liquid level, after which the operator refers to a prepared table to determine cubic contents.","This is close prior art for the shared portable sensing substrate but retains external manual map selection."]},{"source_id":"SRC4","title":"Self-Powered Contents Gauge (100 Series)","publisher":"HMA Group","url":"https://hmagrp.com/self-powered-contents-gauge-100-series/","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["A commercial self-powered tank gauge mechanically converts hydrostatic pressure into continuous indication.","Each indicator is factory calibrated to the applicable tank dimensions and geometry.","The product exemplifies the dedicated per-tank calibrated-gauge alternative and identifies hazardous-area installation as a separately controlled concern."]}],"problem_evidence":{"status":"SUPPORTED","finding":"The problem is visible as a recognized mapping dependency: official guidance requires the correct tank-specific calibration chart and consistent chart use, while patent literature maintains a separate strap chart for every tank because the same level need not imply the same volume. The retained sources establish the error opportunity and accounting/reconciliation consequence, though they do not quantify the incidence of auditors actually choosing the wrong chart.","source_ids":["SRC1","SRC2","SRC3"]},"closest_prior_art":[{"name":"Tank-identified multi-chart level-to-volume system (US20210255020A1)","source_ids":["SRC2"],"overlap":"Uses a shared level-measurement architecture, tank identity, and a persistent portfolio of tank-specific level-to-volume charts to produce the appropriate volume.","remaining_difference":"Routing and conversion are processor-based; the retained disclosure does not show passive port geometry selecting a mechanical cam or a fail-closed shutter for unknown or partial engagement."},{"name":"Portable tank-to-tank ullage gauge followed by a prepared table (US2577629A)","source_ids":["SRC3"],"overlap":"Shares one portable mechanical level-measurement instrument across multiple storage tanks and converts the resulting level through a prepared table.","remaining_difference":"The table remains externally and manually selected; there is no persistent onboard cam bank, context-keyed selector, active-map flag, or unknown-context output lockout."},{"name":"Individually calibrated self-powered contents gauge","source_ids":["SRC4"],"overlap":"Provides direct mechanical indication calibrated to tank geometry without software or manual lookup during ordinary use.","remaining_difference":"It dedicates an individually calibrated indicator to each application rather than sharing one head while preserving and mechanically selecting multiple mappings."}],"prior_art_disposition":"ADJACENT_PRIOR_ART","contrastive_claim_remaining":"Relative to the opened prior art, the remaining falsifiable claim is that one portable, non-electronic gauge can store multiple unchanged tank-specific nonlinear cam profiles and have passive tank-port geometry select exactly one profile only upon full seating, visibly identify it, and otherwise suppress all plausible quantity output. The individual elements are adjacent to established practices, but their complete fail-closed mechanical combination was not found in this bounded screen.","contrastive_claim_falsifier":"The claim is falsified by an earlier public disclosure or commercial device containing the same shared portable mechanical head, onboard multi-cam map bank, port-keyed automatic selection, full-seat guard/identity indication, and unknown-key output lockout; it is also falsified experimentally if any valid collar selects the wrong cam, any partial or unknown collar exposes a plausible reading, switching disturbs an inactive map, or re-entry error exceeds the declared tolerance.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered direct phrasing, older terms such as ullage rod, liquidometer, contents gauge, strap/strapping chart and tank-capacity table, current products and official practice, patents, and combinations of tank identification, portable sensing, cam conversion, keyed coupling, selector detents, and interlocks. Exactly four opened sources from three publisher groupings were retained, including official and first-party material.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"Official guidance explicitly requires conversion with the correct tank calibration chart, and the patent sources show both portable cross-tank measurement followed by a prepared table and separate custom charts for individual tanks.","source_ids":["SRC1","SRC2","SRC3"]},"distinct_testable_claim":{"status":"PASS","rationale":"The residual claim is structurally distinct from the closest retained electronic multi-chart system, portable gauge-plus-table practice, and dedicated calibrated gauge, and it has concrete failure conditions for selection, lockout, isolation, and re-entry.","source_ids":["SRC2","SRC3","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"A detached three-context bench prototype with randomized collar challenges, partial and unknown insertions, fixed reference levels, declared tolerances, and re-entry checks is bounded, measurable, reversible, and does not require live-tank or ledger use.","source_ids":[]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"No obvious stop applies to the proposed detached bench test using simulated travel and surrogate collars. Live tanks, hazardous atmospheres, calibration control, contamination, and use as audit evidence require owner, site-safety, metrology, and engagement authority and remain explicitly outside the first test.","source_ids":["SRC1","SRC4"]}},"screen_survival":true,"world_novelty_boundary":"This coarse public-web screen found adjacent prior art but no close complete match among the four retained sources. It cannot establish world novelty, patentability, freedom to operate, market size, expert acceptance, prevalence, realized audit value, or compliance for live or hazardous tank service."}