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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-2026048490-A1, on 19 February 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000002756

Torsion spring tensioning tool

Published
Permanent URL
Classification
Tools & Tooling › Clamping Tools
Inventors
BOETERS TOBY, VAN DEN HAZEL BERT, WENSING PAUL
Assignee
ASSA ABLOY ENTRANCE SYSTEMS AB
Original source
US-2026048490-A1, the United States Patent and Trademark Office, 19 February 2026
Document SHA-256
6070c5d70968028c4d9f6f77ac5bf742d36b76b3e54a9e0b996d539668fb1519

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 ).

Publication information

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Citation

OpenTechnical Publication OT-2026-000002756, “Torsion spring tensioning tool,” published September 15, 2026 at 19:15:08 UTC, https://opentechnical.org/p/OT-2026-000002756.

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This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.