Casing of blower and ventilating fan utilizing the casing
US4563126A · kind A · utility
18Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1982 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Mar 10, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/56
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A casing of a blower of the improved construction easy to assemble and low in noise level, and a ventilating fan utilizing such casing. The casing of the blower includes a frame, and spiral cases arranged in the frame and having suitable elasticity with respect to the frame, the spiral cases having external dimensions slightly larger than the internal dimensions of the frame in natural condition, so that the spiral cases can be securedly held in place in the frame by the elasticity of the spiral cases themselves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.