Bearing having micropores and design method thereof
June 3, 2018. 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 ReferencesLaser method of precision hole drilling Bearing having an array of microasperities Method of making a cast iron sealing ring Sealing surface and method Laser processing apparatus with means for selectively varying the transverse mode distribution of the laser beam Novel wear-resistant laser-engraved ceramic or metallic carbide surfaces for friction rolls for working elongate members, method for producing same and method for working elongate members using the novel friction roll Wear resistant, abrasive laser-engraved ceramic or metallic carbide surfaces for rotary labyrinth seal members Mechanical seal using pore-dispersed material, and pore-dispersed cemented carbide and method for manufacturing same Excimer laser treatment of engine bearing surfaces such as cylinders Silicon carbide sintered body for mechanical seal and mechanical seal using the same InventorAssigneeApplicationNo. 089800 filed on 06/03/1998US Classes:219/121.71, Methods384/132, Fluid barrier384/625, BEARING-SURFACE TREATMENT700/166LaserExaminersPrimary: Evans, Geoffrey S.Attorney, Agent or FirmForeign Patent References
International ClassB23K 026/00AbstractA method for designing bearings, of improved performance, the load-bearing surfaces of which feature micropores about 2 to 10 microns deep and, preferably, aspect ratios on the order of 7 to 20. The hydrodynamic pressure distribution of a suite of bearing surfaces with different micropore geometries and densities is modeled numerically. The load-bearing surfaces of the bearings are fabricated with micropores having the optimal density and geometry determined by the numerical modeling. Conical micropores may be created by single laser pulses, with the pore size and shape controlled by controlling the laser beam profile, the laser beam power, and the optical parameters of the focusing system.Other References
Field of SearchFluid barrierBEARING-SURFACE TREATMENT Pivoted fluid pad Etching or trimming Methods Hole punching Methods Beam energy control Methods Shaping Hydrodynamic feature Made of particular material Flexible projection (e.g., lip seal, etc.) Hydrodynamic sealing feature Having wear resistant, abradable, or ablative member Ferrous (i.e., iron base) Specific metallic composition | |
