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1. 发明授权

US5900191A Foam producing apparatus and method 失效
标题翻译：泡沫制造装置及方法
公开(公告)号：US5900191A
公开(公告)日：1999-05-04
申请号：US782409
申请日：1997-01-14
申请人： Paul T. Gray , David R. Masters
发明人： Paul T. Gray , David R. Masters
IPC分类号： B01F3/04 , B01F5/04 , B01F5/06 , B01F13/00 , B01F13/10
CPC分类号： B01F13/1025 , B01F3/04049 , B01F5/0408 , B01F5/0475 , B01F5/0485 , B01F5/0695 , B01F2013/1052 , Y10S261/26
摘要： A foam producing apparatus has a first mixing chamber with an inner subchamber connected to a supply of gas at a first pressure and an outer subchamber connected to a supply of a foamable liquid at a second pressure higher than the first pressure. A plurality of orifices connect the outer subchamber to the inner subchamber. The foamable liquid is forced from the outer subchamber into the inner subchamber through the orifices and is atomized to form droplets carried by the gas to an outlet. A second mixing chamber is connected to the outlet of the first mixing chamber and is filled with an agitating medium so that droplets propelled through the second mixing chamber are violently agitated to produce the desired foam.
摘要翻译：泡沫制造装置具有第一混合室，其具有连接到在第一压力下的气体供应的内部子室，以及在比第一压力高的第二压力下连接到可发泡液体的供应的外部子室。多个孔将外部子室连接到内部子室。可发泡液体通过孔口被迫从外部子室进入内部小室，并被雾化以形成由气体携带到出口的液滴。第二混合室连接到第一混合室的出口，并且填充有搅拌介质，使得通过第二混合室推进的液滴剧烈搅动以产生所需的泡沫。

2. 发明授权

US4550412A Carbon-free induction furnace 失效
标题翻译：无碳感应炉
公开(公告)号：US4550412A
公开(公告)日：1985-10-29
申请号：US568770
申请日：1984-01-06
申请人： Cressie E. Holcombe , David R. Masters , William A. Pfeiler
发明人： Cressie E. Holcombe , David R. Masters , William A. Pfeiler
IPC分类号： F27B14/06 , F27B14/10 , F27D1/00 , H05B6/02
CPC分类号： F27D1/0009 , F27B14/061 , F27B14/10 , F27D1/0006
摘要： An induction furnace for melting and casting highly pure metals and alloys such as uranium and uranium alloys in such a manner as to minimize contamination of the melt by carbon derived from the materials and the environment within the furnace. The subject furnace is constructed of carbon free materials and is housed within a conventional vacuum chamber. The furnace comprises a ceramic oxide crucible for holding the charge of metal or alloy. The heating of the crucible is achieved by a plasma-sprayed tungsten susceptor surrounding the crucible which, in turn, is heated by an RF induction coil separated from the susceptor by a cylinder of inorganic insulation. The furnace of the present invention is capable of being rapidly cycled from ambient temperatures to about 1650.degree. C. for effectively melting uranium and uranium alloys without the attendant carbon contamination problems previously encountered when using carbon-bearing furnace materials.
摘要翻译：一种用于熔融和铸造高纯度金属和合金如铀和铀合金的感应炉，以便使来自该材料的碳和来自炉内的环境的熔化物的污染最小化。本炉由无碳材料构成，并被容纳在常规真空室内。该炉包括用于保持金属或合金的电荷的陶瓷氧化物坩埚。坩埚的加热通过围绕坩埚的等离子体喷涂的钨基座来实现，坩埚又由被无机绝缘体的圆筒与基座隔开的RF感应线圈加热。本发明的炉能够从环境温度快速循环至约1650℃，以有效地熔化铀和铀合金，而不会在使用含碳炉材料时遇到先前遇到的碳污染问题。

3. 发明授权

US3993738A High strength graphite and method for preparing same 失效
标题翻译：高强度石墨及其制备方法
公开(公告)号：US3993738A
公开(公告)日：1976-11-23
申请号：US414028
申请日：1973-11-08
申请人： Lyle G. Overholser , David R. Masters , John M. Napier
发明人： Lyle G. Overholser , David R. Masters , John M. Napier
IPC分类号： C01B31/00 , C04B35/532 , C04B35/83 , C01B31/04
CPC分类号： C04B35/83 , C01B31/00 , C04B35/532
摘要： High strength graphite is manufactured from a mixture of a particulate filler prepared by treating a particulate carbon precursor at a temperature in the range of about 400.degree. to 1000.degree. C., an organic carbonizable binder, and green carbonizable fibers in a concentration of not more than 2 weight per cent of the filler. The use of the relatively small quantity of green fibers provides a substantial increase in the flexural strength of the graphite with only a relatively negligible increase in the modulus of elasticity.
摘要翻译：高强度石墨由通过在约400℃至1000℃的温度范围内处理颗粒状碳前体而制备的颗粒填料和不可多于浓度的可生物碳化纤维的混合物制成。超过2重量％的填料。相对少量的绿色纤维的使用提供了石墨的弯曲强度的显着增加，而弹性模量的增加只有相对可忽略的增加。

4. 发明授权

US6046255A Foam and foam/cement mixture 失效
标题翻译：泡沫和泡沫/水泥混合物
公开(公告)号：US6046255A
公开(公告)日：2000-04-04
申请号：US020773
申请日：1998-02-09
申请人： Paul T. Gray , David R. Masters
发明人： Paul T. Gray , David R. Masters
IPC分类号： B01F3/04 , B01F5/04 , B01F5/06 , B01F13/00 , B01F13/10 , C04B38/10 , C08J9/32
CPC分类号： B01F3/04049 , B01F13/1025 , B01F3/04446 , B01F3/04992 , B01F5/0408 , B01F5/0475 , B01F5/0485 , B01F5/0695 , C04B38/106 , B01F2013/1052 , C04B2111/00068 , Y10S261/26
摘要： A foam of very small, microscopic bubbles of surfactant, each bubble containing a small quantity of water, is mixed with a water/cement mixture having a water to cement ratio of less than 0.33. The small bubbles have a ball bearing effect on the smaller cement and sand particles, increasing plasticity or flowability and thus reducing the water requirements of the mixture. The foamed cement mixture is laid to form a desired concrete structure, and the bubbles disintegrate or transform to leave voids of similar size uniformly dispersed throughout the concrete structure.
摘要翻译：将具有表面活性剂的非常小的微观气泡的泡沫，每个含有少量水的气泡与水/水泥比小于0.33的水/水泥混合物混合。小气泡对较小的水泥和砂粒具有球轴承影响，增加了塑性或流动性，从而降低了混合物的水需求。将发泡的水泥混合物铺设以形成所需的混凝土结构，并且气泡分解或转化，以使具有均匀分散在整个混凝土结构中的类似尺寸的空隙。

5. 发明授权

US5006306A Process for alloying uranium and niobium 失效
标题翻译：铀和铌合金化工艺
公开(公告)号：US5006306A
公开(公告)日：1991-04-09
申请号：US578154
申请日：1990-09-06
申请人： Cressie E. Holcombe , Walter G. Northcutt, Jr. , David R. Masters , Lloyd R. Chapman
发明人： Cressie E. Holcombe , Walter G. Northcutt, Jr. , David R. Masters , Lloyd R. Chapman
IPC分类号： C22C1/02
CPC分类号： C22C1/02
摘要： Alloys such as U-6Nb are prepared by forming a stacked sandwich array of uraniun sheets and niobium powder disposed in layers between the sheets, heating the array in a vacuum induction melting furnace to a temperature such as to melt the uranium, holding the resulting mixture at a temperature above the melting point of uranium until the niobium dissolves in the uranium, and casting the uranium-niobium solution. Compositional uniformity in the alloy product is enabled by use of the sandwich structure of uranium sheets and niobium powder.
摘要翻译：合金如U-6Nb通过在片材之间形成层叠的层状夹层板和铌粉末来制备，在真空感应熔炉中将阵列加热到熔化铀的温度，保持所得混合物在高于铀熔点的温度下，直到铌溶解在铀中，并浇铸铀 - 铌溶液。通过使用铀片和铌粉的夹层结构可以实现合金产品的组成均匀性。

6. 发明授权

US4406699A High-temperature electrically conductive ceramic composite and method for making same 失效
标题翻译：高温导电陶瓷复合材料及其制造方法
公开(公告)号：US4406699A
公开(公告)日：1983-09-27
申请号：US271889
申请日：1981-06-09
申请人： David E. Beck , Jack G. Gooch , Cressie E. Holcombe, Jr. , David R. Masters
发明人： David E. Beck , Jack G. Gooch , Cressie E. Holcombe, Jr. , David R. Masters
IPC分类号： C04B35/486 , C22C29/12 , C22C30/00 , C04B35/48
CPC分类号： C22C29/12 , C04B35/486
摘要： The present invention relates to a metal-oxide ceramic composition useful in induction heating applications for treating uranium and uranium alloys. The ceramic composition is electrically conductive at room temperature and is nonreactive with molten uranium. The composition is prepared from a particulate admixture of 20 to 50 vol. % niobium and zirconium oxide which may be stabilized with an addition of a further oxide such as magnesium oxide, calcium oxide, or yttria. The composition is prepared by blending the powders, pressing or casting the blend into the desired product configuration, and then sintering the casting or compact in an inert atmosphere. In the casting operation, calcium aluminate is preferably added to the admixture in place of a like quantity of zirconia for providing a cement to help maintain the integrity of the sintered product.
摘要翻译：本发明涉及用于处理铀和铀合金的感应加热应用中的金属氧化物陶瓷组合物。陶瓷组合物在室温下是导电的，并且与熔融铀无反应。该组合物由20至50体积％的颗粒混合物制备。％铌和氧化锆，其可以通过添加另外的氧化物如氧化镁，氧化钙或氧化钇来稳定。通过将粉末混合，将共混物压制或浇铸成所需的产品构型，然后在惰性气氛中烧结铸件或压块来制备组合物。在铸造操作中，优选在混合物中加入铝酸钙代替类似量的氧化锆，以提供水泥以帮助保持烧结产品的完整性。

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