{
  "abstract": "A rotational indicator comprises a mechanical reducer having a reduction factor that is variable without exchanging components. A plurality of identical double gears rotate about a pair of parallel fixed shafts, a large gear of each double gear being intermeshed with a small gear of a preceding double gear on the opposing shaft. An axially moveable pinion gear is rotationally fixed to a rotatable pinion shaft, and is engageable with any of the large gears of the double gears according to its axial location, whereby a reduction factor between a rotational input and the pinion gear is variable. The pinion shaft is coupled to an indicating mechanism, which can be a pointer of a dial assembly and/or a rotary electrical component. The rotational input can be bounded, and the reduction factor can be adjusted to provide a bounded output range that is compatible with the indicating mechanism.",
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  "published_at": "2026-09-15T19:02:28.188733Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-04-21",
  "source_id": "US-12607248-B1",
  "source_name": "the United States Patent and Trademark Office",
  "source_url": "https://patents.google.com/patent/US12607248B1",
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  "title": "Rotational indicator with mechanically adjustable reduction factor",
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