{
  "abstract": "This invention relates to a quick release bit holder, which includes at least a main body and a sleeve. A first rod provided at the rear end of said main body, a second rod provided at the front end of said main body, and said second rod successively provided with a first outer surrounding, a second outer surrounding and a third outer surrounding from back to front. The outer diameter of said first outer surrounding is larger than the outer diameter of said second outer surrounding, and the outer diameter of said second outer surrounding is larger than the outer diameter of said third outer surrounding. A plurality of ball holes provided around said third outer surrounding, a ball arranged in each ball hole, a first annular groove provided at the front end of said third outer surrounding, a compressible ring provided therein. Said sleeve mounted at the front end of said main body, an first inner surrounding provided at the inner rear end of said sleeve, a second inner surrounding provided at the inner front end of said sleeve, and the inner diameter of said first inner surrounding is larger than the inner diameter of said second inner surrounding. An M-shaped groove provided at the front end of said second inner surrounding, a first blocking surrounding provided behind said M-shaped groove.",
  "assignees": [
    "CHEN HO TIEN"
  ],
  "authors": [
    "CHEN HO-TIEN"
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    "name": "Creative Commons Attribution 4.0 International",
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  "publication_id": "OT-2026-000001740",
  "published_at": "2026-09-15T19:08:13.081449Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-03-19",
  "source_id": "US-2026077456-A1",
  "source_name": "the United States Patent and Trademark Office",
  "source_url": "https://patents.google.com/patent/US2026077456A1",
  "supersedes": null,
  "title": "Quick Release Bit Holder",
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