{
    "title": "SmeshGear Transmission",
    "inventor_name": "Leonardus LAUWERS, Cornelis GIJSBERTUS",
    "publication_year": null,
    "device_name": "SmeshGear",
    "goal": "Provide a compact, high-speed transmission that can shift under full load with near-100 % efficiency and significantly higher starting torque.",
    "problem_addressed": "Conventional planetary gear transmissions are bulky, cannot shift under load, and lose efficiency during gear changes.",
    "concept_summary": "A planetary gear set housed with an integrated clutch and axial-movable brake disc. The clutch connects two of the three rotatable members, while the brake disc, actuated by a lever, can open the clutch during operation, allowing gear changes under load. The housing is sealed for oil lubrication, enabling a compact, shock-free, high-speed gearbox.",
    "detailed_description": null,
    "principles": [
        "Planetary gear mechanics",
        "Clutch engagement/disengagement",
        "Axial brake disc actuation",
        "Lever-based hydraulic control"
    ],
    "scientific_domains": [
        "Mechanical Engineering"
    ],
    "mechanisms_of_action": [
        "Torque transmission via sun, planet, and annulus gears",
        "Clutch plates lock/unlock selected gear members",
        "Brake disc movement disengages clutch during shift",
        "Lever lever hydraulic cylinder moves brake disc axially"
    ],
    "materials": [
        "Steel",
        "Oil (lubricant)",
        "Hydraulic fluid"
    ],
    "energy_sources": [
        "Mechanical input (rotational power from motor)"
    ],
    "inputs": [
        "Rotational power / torque from driving motor"
    ],
    "outputs": [
        "Adjusted rotational speed and torque",
        "Shifted gear ratio"
    ],
    "claimed_performance": "Near 100 % efficiency, gear change <0.001157 s, up to 7x higher starting torque, up to 40 % smaller electric motor, up to 40 % greater range, 25 % yield increase.",
    "experimental_evidence": null,
    "replication_status": null,
    "keywords": [
        "planetary gear",
        "clutch",
        "brake disc",
        "high-speed transmission",
        "compact gearbox",
        "load-shiftable"
    ],
    "related_technologies": [
        "Planetary gearboxes",
        "Wet plate clutches",
        "Hydraulic brake systems"
    ],
    "controversy_level": "low",
    "confidence_score": 0.9,
    "practicability_score": 0.7,
    "fringe_score": 0.1,
    "evidence_strength": 0.2,
    "risk_score": 0.1,
    "trl_estimate": 6,
    "source_urls": [
        "http://www.smesh.eu/content/pdf/SmeshGearEngels.pdf",
        "http://www.smesh.eu"
    ],
    "organizations": [
        "Smesh B.V."
    ],
    "applications": [
        "Electric motor drives",
        "Cranes",
        "Industrial machinery",
        "Bicycles",
        "Vehicle powertrains"
    ],
    "limitations": [
        "No independent experimental data presented",
        "Performance claims are not quantified with test results",
        "Reliance on hydraulic actuation may add complexity"
    ],
    "open_questions": [
        "What is the measured efficiency under real load conditions?",
        "How does the clutch/brake wear over long-term operation?",
        "Can the design be scaled to high-power industrial applications?"
    ],
    "red_flags": [
        "Lack of published test data or peer-reviewed validation",
        "Potential overstatement of efficiency and torque gains"
    ],
    "evidence_quotes": [
        "Changing gears takes less than 0.001157 seconds with continuous output power!",
        "Near 100% efficient, compact, fast, shiftable under full load, 7x higher starting torque.",
        "An up to 40% smaller electric motor",
        "An up to 40% greater range, due to higher electrical efficiency",
        "Yield increases of 25% and more are easily possible for SmeshGear"
    ],
    "category": "Mechanical Engineering"
}