Fluid filter especially for vehicle engine has double wall creating interspace containing open or closed pore material to absorb crash forces

摘要

The filter housing has at least one double wall (10, 12) which creates an interspace containing an open-pore or closed-pore material (14) such as foam. The double wall can have two steel plates in a pot-shaped design with a cover plate (18) fitted on an open side of the pot. The double wall can be formed as an outer container and inner container with the inner container displaceable relative to the outer container.