{
  "abstract": "A zoned vacuum gripping tool comprising one mounting flange, four bellows cups, one ejector, four zone branches and one vent valve. When the bellows cups reach the workpiece, the bellows cups are evacuated by the ejector. Before the workpiece reaches the set-down position, the vacuum circuit is vented by the vent valve while the workpiece is above the receiving surface. The arrangement is a proposed configuration composed from a typed library of mechanism blocks derived from published patents; it has not been constructed.",
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    "robotics-automation/end-effectors/vacuum-grippers",
    "industrial-motion-power-transmission/fluid-power/valves-and-manifolds",
    "industrial-motion-power-transmission/fluid-power/vacuum-generation",
    "lifting-positioning-manipulation/vacuum-lifting/vacuum-safety-systems"
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  "keywords": [
    "zoned vacuum tool",
    "mounting flange",
    "bellows cup",
    "ejector",
    "zone branch",
    "vent valve",
    "compressed air supply",
    "drop release",
    "release control",
    "vacuum"
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  "language": "en",
  "license": {
    "name": "Creative Commons Attribution 4.0 International",
    "url": "https://creativecommons.org/licenses/by/4.0/"
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  "publication_id": "OT-2026-000009100",
  "published_at": "2026-09-17T08:10:55.823363Z",
  "publisher": "Nebula Innovations Limited",
  "record_type": "disclosure",
  "schema": "opentechnical-publication-manifest/1.0",
  "supersedes": "OT-2026-000004784",
  "title": "Four bellows cup vacuum gripper, four zone face, single stage ejector, vented before set-down",
  "uuid": "01a0ae6b-31b8-707e-8023-1b0a148c7237"
}