Airflow control device of the wound film type, in particular for motor vehicles
US5906355A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Jul 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S251/901
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A flow control device for controlling the flow of a stream of air through an air passage aperture, such as the open end of a duct in a heating and/or air conditioning apparatus of a motor vehicle, comprises a strip of film, the two ends of which are wound on two rollers spaced apart from each other. The film has an active region extending between the rollers and displaceable across the aperture by rotation of the rollers. The active region has open regions and closed regions for the selective control of the air stream. The device has a case defining two reserve spaces, each surrounding a respective roller, and serving as a magazine for receiving a slack loop of the film resulting from the differences between the overall diameters of the two rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.