Material for use in composite sliding surface bearings and process of manufacturing the material
Patent 5024881 Issued on June 18, 1991. Estimated Expiration Date: 
May 2, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 2, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesStratification mass for the production of top surfacing layers Composite material for sliding surface bearings Patent #: 4394275 InventorsAssigneeApplicationNo. 346058 filed on 05/02/1989US Classes:428/323, Including a second component containing structurally defined particles428/327, Polymeric or resinous material428/328, Heavy metal or aluminum or compound thereof428/332, Physical dimension specified428/335, Up to 3 mils428/421, Of fluorinated addition polymer from unsaturated monomers428/422, Addition polymer is perhalogenated428/463Ester, halide or nitrile of addition polymerExaminersPrimary: Herbert, Thomas J. Jr.Attorney, Agent or FirmInternational ClassesB32B 005/16B32B 015/08 Foreign Application Priority Data1988-05-05 DEAbstractA material for composite sliding surface bearings having a plastic sliding layer comprises a metallic backing layer and a sliding layer that is joined to the backing layer and consists of a matrix-forming fluorine-containing polymer, in which a metal powder having a high affinity to fluorine is finely dispersed. In order to reduce the friction torque and the wear rate, the fluorine-containing polymer contains metal fluoride and metal oxyfluoride and consists of monoclinally crystallized PVDF, amorphous PVDF and a novel polymer, which in an X-ray diffractogram prepared by CuK -radiation has a sharp intensity peak at a double Bragg angle of 2θ=18.07&#b1;0.03° and has a melting range of 320° to 350° C. and is free of ortho-rhombically crystallized PVDF.Field of SearchEster, halide or nitrile of addition polymerOf fluorinated addition polymer from unsaturated monomers Addition polymer is perhalogenated Including a second component containing structurally defined particles Physical dimension specified Up to 3 mils Heavy metal or aluminum or compound thereof Polymeric or resinous material | |
