Aggregate for producing fresh air stream
US5567393A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1994 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Nov 16, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88054
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus for producing a fresh air stream, has a blower connectable at a pressure side with an exhaust gas conduit of an internal combustion engine of a motor vehicle, a fresh air supply element communicatable with the exhaust gas conduit, a check valve provided between the blower and an opening of the fresh air supply element into the exhaust gas conduit, a cut-off arranged in the fresh air supply element between the check valve and its opening into the exhaust gas conduit and having a closing member loaded with a spring force toward a closing position, an actuating member for the closing member, and a bypass branching from the fresh air supply element so that a pressure which builds when the blower operates and is supplied through the bypass to the actuating member for the closing member acts opposite to the spring force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.