| 摘要 |
<p>A gas bearing is in fluid communication with a pressurized gas supply and a gas sink. The gas bearing includes a gas supply member defining a gas supply bearing surface and a gas sink member defining a gas sink bearing surface. A cylindrical depression, defining one of the gas supply bearing surface and the gas sink bearing surface, is located in one of the gas supply member and the gas sink member, A cylindrical protrusion, defining the other surface, protrudes from the other member and is sized to fit within the cylindrical depression with a predeterr.ined clearance. The gas supply bring surface is opposed to the gas sink bearing surface. An opening is located in the gas supply bearing surface. The opening is in fluid communrcation with the pressurized gas supply at a feed pressure via the gas supply member. A porous coating covers a portion of the gas supply bearing surface surrounding the opening. The porous coating is in fluid communication with the pressurized gas supply via the gas supply member for maintaining a bearing pressure between the porous coating and the gas sink bearing surface such that the bearing pressure is greater than the feed pressure. An annular channel located in the gas sink bearing surface is aligned with and located opposite the opening, and is in fluid communication with the gas sink via the gas sink member. C) m LM C) C) C</p> |
