Banded cooling fan band having knit-line strength improvement
US12163531B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2021 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Jun 16, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan includes a hub configured to be driven by motor to rotate about a fan rotational axis, blades that protrude radially from the hub and a band that surrounds the rotational axis and connects the tips of the blades. The band includes features that structurally reinforce the knit lines. In some embodiments, the features are thickened regions that protrude from outer surface of the band in a direction away from the hub. A thickened region is disposed between respective tips of each pair of adjacent blades. In some embodiments, the features are structurally—reinforcing ribs that protrude from the hub-facing surface of the band. A rib is disposed between respective tips of each pair of adjacent blades. In some embodiments, the features are both ribs and thickened regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.