{
  "abstract": "Torsion spring tensioning tool ( 100 ) for tensioning a torsion spring of a counterbalancing mechanism of an overhead door, wherein the torsion spring tensioning tool ( 100 ) comprises a housing ( 80 ), a gear wheel arrangement ( 20 ) adapted to be mounted on a shaft of the counterbalancing mechanism, said gear wheel arrangement ( 20 ) comprising a gear wheel ( 21 ) rotatably arranged in the housing ( 80 ), the torsion spring tensioning tool ( 100 ) further comprising a gear mechanism ( 54 ) coupled to the gear wheel ( 21 ) for rotating said gear wheel ( 21 ). The gear wheel arrangement ( 20 ) comprises a first and second engaging arrangement ( 32 , 60 ) arranged to be fixed relative to the gear wheel ( 21 ).",
  "assignees": [
    "ASSA ABLOY ENTRANCE SYSTEMS AB"
  ],
  "authors": [
    "BOETERS TOBY",
    "VAN DEN HAZEL BERT",
    "WENSING PAUL"
  ],
  "canonical_url": "https://opentechnical.org/p/OT-2026-000002756",
  "categories": [
    "tools-tooling/clamping-tools"
  ],
  "extent": {
    "figures": 0,
    "paragraphs": 0,
    "words": 138
  },
  "figures": [],
  "files": [
    {
      "bytes": 9665,
      "media_type": "text/html; charset=utf-8",
      "name": "index.html",
      "sha256": "27007b231bf24a9b2b185926b07e66080e514646395d2de026a9d281d6bd28ac"
    },
    {
      "bytes": 1116,
      "media_type": "text/markdown; charset=utf-8",
      "name": "publication.md",
      "sha256": "4f42bbb43d2b4086d11d2938ea860a7a152a9a3fcbe62ee82dcf00f900cf501d"
    },
    {
      "bytes": 1229,
      "media_type": "text/plain; charset=utf-8",
      "name": "publication.txt",
      "sha256": "6070c5d70968028c4d9f6f77ac5bf742d36b76b3e54a9e0b996d539668fb1519"
    }
  ],
  "integrity": {
    "hash_algorithm": "sha256",
    "keys_url": "https://opentechnical.org/integrity/keys",
    "record_url": "https://opentechnical.org/p/OT-2026-000002756/integrity",
    "signature_algorithm": "Ed25519",
    "signature_file": "manifest.sig",
    "verify_url": "https://opentechnical.org/integrity/verify"
  },
  "keywords": [
    "b25b27/306",
    "b25b27/306",
    "b25b27/306",
    "b25b27/30",
    "e05d13/00",
    "e05d13/1261"
  ],
  "language": "en",
  "license": {
    "name": "Creative Commons Attribution 4.0 International",
    "url": "https://creativecommons.org/licenses/by/4.0/"
  },
  "publication_id": "OT-2026-000002756",
  "published_at": "2026-09-15T19:15:08.878107Z",
  "publisher": "Nebula Innovations Limited",
  "record_type": "record",
  "schema": "opentechnical-publication-manifest/1.0",
  "source_date": "2026-02-19",
  "source_id": "US-2026048490-A1",
  "source_name": "the United States Patent and Trademark Office",
  "source_url": "https://patents.google.com/patent/US2026048490A1",
  "supersedes": null,
  "title": "Torsion spring tensioning tool",
  "uuid": "01a0a67e-95cd-7662-a470-6e763a469bd4"
}