{
  "abstract": "A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off 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",
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    "robotics-automation/end-effectors/tool-changers",
    "industrial-motion-power-transmission/fluid-power/vacuum-generation"
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  "keywords": [
    "bellows compliant vacuum tool",
    "tool-change interface",
    "bellows cup",
    "ejector",
    "contact detector",
    "blow-off valve",
    "blow off release",
    "compressed air supply",
    "contact sensing",
    "drop release"
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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-2026-000029744",
  "published_at": "2026-09-17T08:19:51.545382Z",
  "publisher": "Nebula Innovations Limited",
  "record_type": "disclosure",
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  "supersedes": null,
  "title": "Single bellows cup vacuum gripper, two stage ejector, sustained blow-off before set-down, on a tool changer",
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