Sliding material and method of manufacturing the same
Patent 5162157 Issued on November 10, 1992. Estimated Expiration Date: 
February 26, 2011. 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.
February 26, 2011. 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 ReferencesMaterial for sliding surface bearings Composite bearing material with polymer filled metal matrix interlayer of distinct metal particle sizes and method of making same Plain bearing Patent #: 4865922 InventorsAssigneeApplicationNo. 660821 filed on 02/26/1991US Classes:428/549, Fiber, asbestos, or cellulose in or next to particulate component419/9, Powder not compacted419/10, Metal and nonmetal in final product419/35, Coating427/405, Metal base427/409, Metal base427/419.5, Organic coating428/550, Porous component428/551Nonmetal componentExaminersPrimary: Lechert, Stephen J. Jr.Attorney, Agent or FirmForeign Patent References
International ClassG22F 007/00Foreign Application Priority Data1990-02-27 JPAbstractDisclosed are a sliding material comprising a backing metal having a porous metal layer formed on the surface thereof in which pores are defined and a composition for impregnation coating impregnated and coated to the pores and the surface thereof, wherein the composition for impregnation coating is a composition composed of (a) 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm2 /g in an average particle size, and the remaining portion substantially composed of PTFE, a sliding material comprising a backing metal having porous metal layer formed on the surface thereof in which pores are defined and a composition for impregnation coating impregnated and coated to the pores and the surface thereof, wherein the composition for impregnation coating is a composition composed of (b) 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm2 /g in an average particle size, 0.5-30 vol % of at least one kind selected from a group B (filler) composed of solid lubricant such as metal oxide, metal fluoride, graphite, and the like, a fiber material such as carbon fiber, glass fiber, and the like, and ceramics such as SiC, and the like, and the remaining portion substantially composed of PTFE, a total of the respective components other than the PTFE being 5.5-50 vol %, and a method of manufacturing a sliding material comprising the steps of impregnating and covering the above composition for impregnation coating (a) or (b) to the pores and the surface thereof defined in the porous metal layer formed on the surface of a backing metal, and thereafter baking the backing metal with the above composition for impregnation coating (a) or (b) in a neutral atmosphere or in a reducing atmosphere. | |
