Barrel fan with enclosed motor
US6474956B2 · kind B2 · utility
8Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Feb 2, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/5806
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A barrel fan for the heavy duty circulation of air at the floor level consisting of a cylindrical tubular housing having a guarded rotating propeller blade therein. The blade is driven by a belt connected to an electric motor located on the lower exterior portion of the housing preferably shielded by a skirt in ventilating communication with the housing interior for motor cooling purposes. The motor is pivotally mounted and a spring interposed between the motor and housing maintains the tension within the belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.