Air cleaner
US4227898A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1979 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Jan 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/2351
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air cleaner to remove particulate matter from an air stream, and to dampen sounds emitted to the air cleaner by an internal combustion engine receiving air from the air cleaner. Such sounds are commonly conducted upstream through conventional air cleaners and are heard emitting from the inlet of the air cleaner. The air cleaner of this invention both effectively cleans the air and diminishes said sounds. The air cleaner has a partition dividing its interior into a unit chamber holding a filter element unit, and a passage chamber receiving air to be cleaned and conveying it to an opening in the partition leading to the unit chamber. The shape and location of the passage chamber assist in the reduction of sound transmitted upstream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.