Ventilation assembly for the pressure relief of the interior of an automobile
US8328609B2 · kind B2 · utility
8Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2007 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Feb 16, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/249
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A back-air blocking device to ventilate a motor vehicle's inside space includes a frame or housing made of a first plastic, and a valve flap, made of flexible material, connected in one zone to the frame and in other zones resting against a sealing surface of said frame when the flap is in its rest position. The flap detaches off the sealing surface when subjected to a pressure differential. The valve flap is a thin plate made of a closed-pore, foamed material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.