| 摘要 |
<p>A safety device for venting a fuel tank, especially for automobiles comprising a natural or artificial elastomer diaphragm resistant to hydrocarbons, pierced by slits, held between the flanges of two concentric cylindrical elements constituting a valve body, a clearance being provided between the membrane and the flanges framing it so as to avoid having the latter cause stresses in the said membrane which would lead to deformation of the slits and would modify in an unpredictable manner gas flow passing through it.</p> |
