High-offset belt tensioner with counterbalance torsion spring force
US12292112B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2022 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | May 16, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0893
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
High-offset belt tensioners have a support base with a pivot tube and an arm coupled thereto rotation about a pivot axis. A flat wire torsion spring has an inner spring hook attached to the pivot tube and an outer spring hook attached to a first end of the arm at a position that counterbalances a hub load force. The torsion spring applies a spring force to the arm in a direction that moves with the arm throughout its entire sweep in a belt engaging direction. A first plane of the hub load force is axially offset from a second plane of the spring force, a fulcrum is defined between first and second ends of the arm, and a first lineal axial distance from the fulcrum to the first plane is greater than or equal to a second lineal axial distance from the fulcrum to the second plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.