{
  "abstract": "An end effector for vacuum end-of-arm tooling for robotic material handling is described. The tool comprises a tool-change interface (10), a suction cup (12), a ejector (14), a isolation valve (16), a zone branch (18), and a pressure sensor (20). The arrangement addresses handling workpieces that do not cover the whole gripping face, where an uncovered suction cup is an open leak, and one open leak pulls the whole circuit towards atmosphere, so a tool sized for the largest workpiece loses grip on the smallest. The description covers which part of the circuit is cut, what keeps its own vacuum while the cut is made, and what the remaining zones do while one zone is isolated. Every connection is stated with the medium it carries, and the operating sequence is given as conditions on named operations.",
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  "categories": [
    "robotics-automation/end-effectors/vacuum-grippers",
    "industrial-motion-power-transmission/fluid-power/vacuum-generation",
    "industrial-motion-power-transmission/fluid-power/valves-and-manifolds",
    "sensors-controls-machine-vision/force-and-pressure-sensing/vacuum-sensors"
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      "caption": "Block diagram of the tool, with the medium carried by each connection.",
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    {
      "caption": "Elevation of the gripping face on its mounting.",
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  "keywords": [
    "ejector",
    "isolation valve",
    "pressure sensor",
    "suction cup",
    "tool-change interface",
    "zone branch",
    "zoned isolation",
    "end of arm tooling",
    "oval",
    "rubber"
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  "language": "en",
  "license": {
    "name": "Creative Commons Attribution 4.0 International",
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  "publication_id": "OT-2026-000006473",
  "published_at": "2026-09-16T08:36:45.748672Z",
  "publisher": "Nebula Innovations Limited",
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  "title": "Vacuum cup gripper, three zone face, per zone isolation, ejector fed, pressure verified, rubber cups",
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