{
  "abstract": "A servo reducer includes a motor gear connected to a driving motor, a support structure, a first-stage gear set, a first-stage shaft, a second-stage gear set, a second-stage shaft, a third-stage gear set, a third-stage shaft, and an output gear meshed with the third-stage gear set. The first-stage shaft, the second-stage shaft, and the third-stage shaft are mounted on the support structure. The first-stage gear set is mounted on the first-stage shaft and is meshed with the motor gear. The second-stage gear set is mounted on the second-stage shaft and is meshed with the first-stage gear set. The third-stage gear set is mounted on the third-stage shaft and is meshed with the second-stage gear set. When an external load exceeds an allowable limit of a gear strength, external load energy is converted into friction heat between the teeth and consumed, so no backlash is defined.",
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  "published_at": "2026-09-15T19:03:28.673292Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-04-14",
  "source_id": "US-12601402-B2",
  "source_name": "the United States Patent and Trademark Office",
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  "supersedes": null,
  "title": "Servo reducer",
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