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US 6,660,359 B1Granted
Fiber mat
AssigneeJ. Eberspächer GmbH & Co. KG
InventorsGeorg Wirth, Peter Zacke, Siegfried Woerner
Life of this patent
Estimating the term…
Abstract
A fiber mat is configured such that the fibers 2 of an intermediate layer arranged between two adjacent layers touch the fibers of one of the layers at positions situated at a distance from the contact points with the fibers of the other layer. The positioning and the material of the fibers is designed to have a high elasticity with regard to pressing.
Claims20
A fiber arrangement comprising:
- a first layer including a plurality of fibers extending in a first direction;
- a second layer arranged adjacent said first layer, said second layer including a plurality of fibers extending in a second direction, said second direction being substantially perpendicular to said first direction;
- a third layer arranged adjacent said second layer, said third layer including a plurality of fibers extending in a third direction, said third direction being substantially perpendicular to said second direction, each of said fibers of said second layer being in contact with said fibers of said first and third layers at a plurality of contact points, said contact points being spaced from each other by an averse distance greater than a diameter of said fibers, said contact points between said fast and second layers being offset relative to said contact points between said second and third layers;
- a first surface on one side of said layers;
- a second surface spaced from said first surface and on a second opposite side of said layers, said first and second surfaces being movable relative to each other, and said first, second and third layers elastically biasing said first and second surfaces apart.
2 more elements
A fiber arrangement comprising:
- a first layer including a plurality of fibers extending in a first direction;
- a second layer arranged adjacent said first layer, said second layer including a plurality of fibers extending in a second direction, said second direction being substantially perpendicular to said first direction;
- a third layer arranged adjacent said second layer, said third layer including a plurality of fibers extending in a third direction, said third direction being substantially perpendicular to said second direction, each of said fibers of said second layer being in contact with said fibers of said first and third layers at a plurality of contact points, said contact points being spaced from each other by an average distance greater than a diameter of said fibers, said contact points between said first and second layers being offset relative to said contact points between said second and third layers;
- said layers having alternately substantially straight fibers and wave-shaped fibers, wherein said substantially stub fibers of one said layer are in contact with one side of one adjacent sad layer including wave-shaped fibers in an area of extreme points of waves on said wave-shaped fibers, while said substantially straight fibers of another said layer are in contact with another side of said layer including said wave-shaped fibers at points of said wave-shaped fibers where curvature of said waves change.
1 more element
A fiber arrangement comprising:
- a first layer including a plurality of fibers extending in a first direction;
- a second layer arranged adjacent said first layer, said second layer including a plurality of fibers extending in a second direction, said second direction being substantially perpendicular to said first direction;
- a third layer arranged adjacent said second layer, said third layer including a plurality of fibers extending in a third direction, said third direction being substantially perpendicular to said second direction, each of said fibers of said second layer being in contact with said fibers of said first and third layers at a plurality of contact point, said contact points being spaced from each other by an average distance greater than a diameter of said fibers, said contact points between said first and second layers being offset relative to said contact points between said second and third layers, a portion of said plurality of said fibers being helically coiled.
Dependencies are inferred from the claim text.