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US 5,629,082 AGranted
Multilayer material for sliding surface bearings
AssigneeKolbenschmidt Aktiengesellschaft
InventorsHans-Paul Baureis, Werner Schubert, Manfred Muller
Life of this patent
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Abstract
A multilayer material for sliding surface bearings comprises a metal backing layer, a sintered porous bearing layer of a bearing metal, and a low-friction layer consisting of a mixture of PTFE and 5 to 30% by volume metal filler, and fills also the pores of the bearing layer. To reduce the wear the mixture of PTFE and metal filler contains also 5 to 40% by volume PVDF.
Claims4
A multilayer material for sliding surface bearings, which comprises a metal backing layer;
- a porous bearing layer, which consists of a metal for sliding surface bearings and has been sinter-bonded to the backing layer;
- and a low-friction layer, which completely also fills the pores of the bearing layer and consists essentially of a mixture of at least about 70% by volume of polytetrafluoroethylene (PTFE), about 5 to 25% by volume metal filler, and about 5 to 25% by volume polyvinylidene fluoride (PVDF).
Dependencies are inferred from the claim text.