{
  "abstract": "A robotic system can include or be coupled with an end effector assembly. The end effector may include multiple of suction cups configured to individually receive suction pressure (e.g., from a shared vacuum source), and a set of unidirectional valves coupled to the multiple suction cups to individually control supply or cut-off of the suction pressure to an individual suction cup of the plurality of suction cups. Each of the unidirectional valves may include a first flow path to convey the suction pressure from the source of suction pressure to the suction cup, and a second flow path extending between a suction cup to the atmosphere. The valve can be configured to switch between the first flow path and the second flow path to activate or deactivate the individual suction cup.",
  "assignees": [
    "AMAZON TECH INC"
  ],
  "authors": [
    "BEDARD BENJAMIN",
    "SIZE AARON"
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    "name": "Creative Commons Attribution 4.0 International",
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  "published_at": "2026-09-15T19:16:04.687758Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-02-17",
  "source_id": "US-12552050-B1",
  "source_name": "the United States Patent and Trademark Office",
  "source_url": "https://patents.google.com/patent/US12552050B1",
  "supersedes": null,
  "title": "Unidirectional valve for suction-based end effector of robotic arm",
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}