Air intake cover for a blower vacuum apparatus
US4756668A · kind A · utility
15Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Jul 23, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/703
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a protective cover for the air intake opening in a blower-vacuum apparatus. The cover contains opening defined in the cover having a large cross sectional area relative to the area of the air intake opening. The openings in the cover are in the vertical wall of the cover to force the air to enter the apparatus radially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.