Fan for handheld blower
US12385494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2022 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Oct 10, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/666
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan includes a hub and a plurality of blades extending radially outwardly from the hub and spaced circumferentially about the hub. The plurality of blades includes a reference blade, a first blade, and a second blade. The reference blade is disposed after the first blade in a circumferential direction about the hub. The second blade is disposed after the reference blade in the circumferential direction. The first blade is circumferentially spaced a first distance from the reference blade. The second blade is circumferentially spaced a second distance from the reference blade. The first distance is greater than the second distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.