Electric blower and electric equipment
US10947994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2016 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Sep 8, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/44
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electric blower includes: a motor including a rotary shaft; a first centrifugal fan fixed to a first end side of the rotary shaft; a second centrifugal fan fixed to a second end side of the rotary shaft opposite to the first end side; and a casing surrounding the motor, the first centrifugal fan and the second centrifugal fan. In the electric blower, first force applied by the first centrifugal fan to the rotary shaft in a first direction in an axial direction of the rotary shaft and second force applied by the second centrifugal fan to the rotary shaft in a second direction in the axial direction of the rotary shaft are opposite to each other during rotation of the rotary shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.