Portable electrically powered blower apparatus
US6105206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1999 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Apr 13, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D19/002
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An improved portable electrically powered leaf blower is disclosed that can provide levels of air flow and velocity comparable to those of gasoline-powered blowers, yet that generates substantially reduced noise, eliminates exhaust emissions and emissions from spilled fuel, and is lightweight and convenient to operate. The leaf blower incorporates a sound-insulated duct that encloses an electric motor and fan assembly, and a handle projects above the duct's inlet end. Electrical power is provided by a battery pack carried in a backpack worn by the operator. Positioning the primary noise sources within a duct that in use is positioned close to the ground minimizes noise levels both at the operator's ears and at a distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.