{
  "abstract": "A water-impermeable cover is provided with an opening part extending so as to approach an opening part of a holding ring of a propeller shaft. The water-impermeable cover is provided at a position on the opening-part side of the holding ring. The water-impermeable cover is fixed in a position on the opening-part side of the holding ring of the stub shaft. The opening part of the water-impermeable cover is extended so as to approach the opening part of the holding ring.",
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  "published_at": "2026-09-15T19:03:28.447633Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-04-14",
  "source_id": "US-12601380-B2",
  "source_name": "the United States Patent and Trademark Office",
  "source_url": "https://patents.google.com/patent/US12601380B2",
  "supersedes": null,
  "title": "Propeller shaft",
  "uuid": "01a0a673-e5bf-7731-827e-0c9c8bc1041a"
}