Bearing and bearing liner wear resistant compliant layer
First Claim
Patent Images
1. A bearing liner for attachment to a substrate having at least one projection thereon, said bearing liner comprising:
- a first wear resistant layer, said first wear resistant layer having a wear surface;
said first wear resistant layer being deformable under load whereby application of said wear resistant layer directly to said substrate would cause the projections to cause a protrusion on the wear surface, the first wear resistant layer including a first porous backing member and an adhesive and a first plurality of particles intimately mixed with the adhesive and providing a low friction and having a sufficiently small size to be mechanically bonded in the pores of the first backing member, the particles being mechanically bonded within the pores of the backing member and being chemically bonded by the adhesive;
a compliant layer disposed between the first wear resistant layer and the substrate, said compliant layer being deformable to permit the compliant layer to at least partially receive the projection whereby the tendency of the projection to cause the protrusion is reduced; and
said compliant layer having a second wear surface, said first wear resistant layer covering said second wear surface until said first wear resistant layer is worn away to expose the second wear surface, the second compliant layer including a second porous backing member and an adhesive and a second plurality of particles intimately mixed with the adhesive and providing a low friction and having a sufficiently small size to be mechanically bonded in the pores of the second backing member, the particles being mechanically bonded within the pores of the backing member and being chemically bonded in the adhesive.
0 Assignments
0 Petitions
Accused Products
Abstract
A bearing liner for attachment to a substrate comprising a first wear resistant layer and a second wear resistant layer joined to the first wear resistant layer. The second wear resistant layer serves to increase the useful life of the bearing liner. In addition, the second wear resistant layer serves as a compliant layer for receiving any projections in the substrate so that the tendency of any such projections to cause local protrusions of the wear surface of the first wear resistant layer is reduced.
16 Citations
27 Claims
-
1. A bearing liner for attachment to a substrate having at least one projection thereon, said bearing liner comprising:
-
a first wear resistant layer, said first wear resistant layer having a wear surface; said first wear resistant layer being deformable under load whereby application of said wear resistant layer directly to said substrate would cause the projections to cause a protrusion on the wear surface, the first wear resistant layer including a first porous backing member and an adhesive and a first plurality of particles intimately mixed with the adhesive and providing a low friction and having a sufficiently small size to be mechanically bonded in the pores of the first backing member, the particles being mechanically bonded within the pores of the backing member and being chemically bonded by the adhesive; a compliant layer disposed between the first wear resistant layer and the substrate, said compliant layer being deformable to permit the compliant layer to at least partially receive the projection whereby the tendency of the projection to cause the protrusion is reduced; and said compliant layer having a second wear surface, said first wear resistant layer covering said second wear surface until said first wear resistant layer is worn away to expose the second wear surface, the second compliant layer including a second porous backing member and an adhesive and a second plurality of particles intimately mixed with the adhesive and providing a low friction and having a sufficiently small size to be mechanically bonded in the pores of the second backing member, the particles being mechanically bonded within the pores of the backing member and being chemically bonded in the adhesive. - View Dependent Claims (2, 11, 12, 13, 14, 15, 16, 17)
-
-
3. In a bearing including a substrate having an irregular surface,
a first thin wear resistant layer having a first wear surface wherein the first wear resistant layer is of the type which would be deformed by the irregular surface of the substrate upon loading of the first wear resistant layer against the irregular surface, the first wear resistant layer including a first porous backing member and a first plurality of particles of a low friction material mechanically bonded in the pores of the backing member and mixed with an adhesive having properties of chemically bonding the particles, a thin compliant layer attached to the first wear resistant layer at the surface removed from the first wear surface, said compliant layer being resiliently deformable and having properties of reducing the transmission of the irregularities of said irregular surface to the first wear surface; - and
said compliant layer having a second wear surface whereby the compliant layer also serves to extend the useful life of the bearing, the second wear surface being disposed in contiguous relationship to the first wear resistant layer, the compliant layer including a second porous backing member and a second adhesive facilitating the attachment of the compliant layer to the first wear resistant layer and a second plurality of particles of a low friction material mechanically bonded in the pores of the second backing member and intimately mixed with the second adhesive and the second adhesive having properties of chemically bonding the particles in the second plurality. - View Dependent Claims (4, 5, 18, 19)
- and
-
6. A bearing liner for attachment to a substrate having a projection thereon, said bearing liner comprising:
-
a first thin wear resistant layer having a thickness of a few thousandths of an inch and including a binder, a lubricant distributed in said binder, and a porous material having fibrous properties for increasing the strength of said first wear resistant layer, the lubricant being mechanically locked in the pores of the fibrous material and being chemically bonded by the binder, said first wear resistant layer having a first wear surface; a compliant layer disposed disposable the first wear resistant layer and the substrate in fixed relationship to the substrate and the first wear resistant layer, said compliant layer being deformable to permit said compliant layer to at least partially receive any projections in the substrate whereby the tendency of any such projections to cause local protrusions of the wear surface is reduced; and said compliant layer having a thickness of a few thousandths of an inch and having a second wear surface adjacent the first wear resistant layer whereby the compliant layer also serves to extend the useful life of the bearing liner, the second wear resistant layer including a binder facilitating the disposition of the compliant layer in fixed relationship with the first wear resistant layer, a lubricant distributed in said binder and a porous material having fibrous properties for increasing the strength of said second wear resistant layer, the lubricant being mechanically locked in the pores of the fibrous material and being chemically bonded by the binder. - View Dependent Claims (7, 20, 21)
-
-
8. A bearing liner comprising:
-
a plurality of thin wear resistant layers adhered to one another; each of said wear resistant layers having a thickness in the order of a few thousandth of an inch and including a binder, particles of a lubricant intimately distributed in said binder, and a layer of a porous material for increasing the strength of the bearing liner, one of said wear resistant layers having a first wear surface which is exposed for initial wear, the lubricant in each of the wear resistant layers being mechanically bonded in the pores of the porous material in that layer and being chemically bonded by the binder. - View Dependent Claims (9, 10, 22, 23, 24, 25, 26, 27)
-
Specification