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公开(公告)号：US5340776A
公开(公告)日：1994-08-23
申请号：US881929
申请日：1992-05-12
申请人： Hartmut Paschke , Johann Daimer , Richard Haring
发明人： Hartmut Paschke , Johann Daimer , Richard Haring
CPC分类号： C03B19/1005 , B02C17/16 , B02C17/20 , B02C23/18
摘要： For the preparation of high purity glass powder having a mean particle size of .ltoreq.10 .mu.m, glass powder having a larger particle size up to 300 .mu.m is ground to the desired particle size in a stirred mill with glass grinding elements in the presence of a grinding liquid comprising water or preferably a mixture of at least 50% by weight of water and at least one water-soluble, oxygen-containing organic compound having 1 to 5 carbon atoms in the molecule, e.g., tert.-butyl alcohol; the ground slurry is then frozen, and the solvent is subsequently removed from the frozen slurry by freeze-drying. A resultant glass powder with a mean particle size d.sub.50 of 0.5 to 2 .mu.m is particularly suitable as a filler for synthetic resins in the dental sector.
摘要翻译： 为了制备平均粒径为<10μm的高纯度玻璃粉末，具有最大300μm粒度的玻璃粉末在具有玻璃研磨元件的搅拌机中研磨至所需粒度 存在包含水或优选至少50重量％的水和至少一种在分子中具有1至5个碳原子的水溶性含氧有机化合物的混合物的研磨液体，例如叔丁醇 ; 然后将研磨的浆液冷冻，然后通过冷冻干燥从冷冻的浆料中除去溶剂。 平均粒径d50为0.5〜2μm的玻璃粉末特别适用于牙科领域的合成树脂的填料。
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公开(公告)号：US4310073A
公开(公告)日：1982-01-12
申请号：US122343
申请日：1980-02-19
申请人： Richard Haring
发明人： Richard Haring
摘要： The speed of loaded and unloaded driverless vehicles traveling along an inclined path is controlled by a hydraulic retarder mechanism which dissipates the kinetic energy of the vehicle. The retarder mechanism is velocity sensitive and projects into the path of part of the vehicle. The retarder mechanism slows down fast moving vehicles but has little or no effect on slow moving vehicles.
摘要翻译： 装载和卸载的无人驾驶车辆沿倾斜路径行驶的速度由一个消除车辆动能的液压缓速器机构控制。 缓速器机构是速度敏感的并且投射到车辆的一部分的路径中。 减速机构减慢了快速移动的车辆，但对缓慢移动的车辆几乎没有或没有影响。
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