| 摘要 |
920,785. Impregnated bearing surfaces. GLACIER METAL CO. Ltd. Oct. 10, 1961 [Oct. 14, 1960], No. 35376/60. Class 140. [Also in Group XXXIV] In a bearing, the bearing surface is formed by a layer of polyethylene terephthalate with or without up to 40% by volume of one or more filling materials, the layer thickness not exceeding 0.125 inches. The layer is impregnated into the pores of a hot bronze sintered layer by rolling. |
