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    • 3. 发明申请
    • Infiltrating a powder metal skeleton by a similar alloy with depressed melting point exploiting a persistent liquid phase at equilibrium, suitable for fabricating steel parts
    • 通过相似的合金渗透粉末金属骨架,熔点低于平衡时持续的液相,适用于制造钢件
    • US20050109431A1
    • 2005-05-26
    • US10723989
    • 2003-11-26
    • Brian KernanEmanuel SachsSamuel AllenAdam Lorenz
    • Brian KernanEmanuel SachsSamuel AllenAdam Lorenz
    • C22C33/02B22F1/00C22C38/00
    • C22C38/18B33Y80/00C22C33/0242
    • A steel powder metal skeleton is infiltrated with an infiltrant composition similar to the skeleton, with an additional agent that depresses the melting point of the infiltrant relative to the skeleton. Infiltration is driven primarily by capillary pressure. The powder and infiltrant compositions differ primarily only in a higher concentration of a melting point depressant agent “MPD” in the infiltrant. Carbon (C) and silicon (Si) and several other elements can be elements in an MPD, either alone or in combination. Certain steel target compositions are such that a complementary infiltrant, and skeleton can be chosen such that a skeleton will remain solid at an infiltration temperature at which the infiltrant can be melted and fully infiltrated, and further where there is a persistent two phase field, with a liquid phase that is large enough (greater than 7% vol, and typically between 20 and 40 vol %) so that flow can be maintained without choke off from diffusional solidification. The solid and the liquid phases remaining after any diffusional solidification have different compositions, with a bulk composition of the target. Typically the difference is slight, and the full part is substantially homogeneous. Heat treating, such as austenitizing, quenching, or slow cooling and tempering, can improve homogeneity and mechanical properties. The MPD can have a relatively high diffusivity and solubility in the skeleton. Methods of designing systems of target, skeleton and infiltrant compositions and infiltration temperature are disclosed.
    • 钢粉末金属骨架用类似于骨架的渗透剂组合物渗透,另外一种可以降低渗透剂相对于骨架的熔点的试剂。 渗透主要由毛细管压力驱动。 粉末和渗透剂组合物主要仅在浸润剂中较高浓度的熔点降低剂“MPD”。 碳(C)和硅(Si)等几种元素可以单独或组合使用在MPD中的元素。 某些钢靶组合物使得可以选择互补的浸润剂和骨架,使得骨架将在浸润剂可以熔化和完全渗透的浸润温度下保持固体,并且进一步存在持续的两相场,其中 足够大的液相(大于7体积%,通常在20和40体积%之间),从而可以保持流动而不会阻碍扩散凝固。 在任何扩散固化后残留的固体和液相具有不同的组成,具有靶的体积组成。 通常,差异很小,整个部分基本上是均匀的。 诸如奥氏体化,淬火或缓慢冷却和回火的热处理可以改善均匀性和机械性能。 MPD可以在骨架中具有相对较高的扩散性和溶解性。 公开了设计目标,骨架和浸润剂组合物系统的方法和浸润温度。
    • 5. 发明授权
    • Modular living quarters
    • 模块化生活区
    • US6109189A
    • 2000-08-29
    • US70099
    • 1998-04-27
    • Samuel Allen Tarver
    • Samuel Allen Tarver
    • A47K4/00A47B5/00
    • A47K4/00
    • A transportable living quarters configured for maximum comfort and spaciousness, with a relatively small footprint. In order to enhance the efficiency of the layout of the present invention, a unique sofa/bed arrangement is contemplated, wherein first and second, facing fold-out sofas are provided which are convertible to a single bed, which may be full size or larger. One of the sofas further provides a means to manipulate, via bracketed supports, the sofa back to form a long counter area, which, in the preferred embodiment of the invention, is situated adjacent to the kitchen counter and thereby extends same. The present invention further contemplates a dining/work table which is configured to be stored along the ceiling of the unit, in a relatively hidden capacity, and easily deployed between the first and second sofas when needed, providing a relatively large, stable work surface. The bathroom unit of the present invention contemplates a unique drain connection system, wherein the lavatory drain includes a drainpipe connection to a stationary drainpipe built into the wall structure of the unit, the connection accomplished without the requirement of hoses, pipe fittings or the like. The living quarters may be utilized as a stand alone facility, or may be incorporated into a building or other structure in a temporary or permanent capacity, or in a camper, boat, or modular housing or the like, or any other location where a small, yet fully equipped living quarters is required.
    • 一个可移动的生活区,配置最大的舒适和宽敞,占地面积相对较小。 为了提高本发明的布置效率,设想了独特的沙发/床布置,其中提供了第一和第二面向折叠沙发,其可转换成单个床,其可以是全尺寸或更大 。 其中一张沙发进一步提供了一种手段,通过支架支撑将操作沙发放回以形成一个长的柜台区域,在本发明的优选实施例中,这个区域位于厨房柜台附近,从而相同地延伸。 本发明还考虑了一种餐具/工作台,其被配置为以相对隐藏的能力沿着单元的天花板存储,并且在需要时容易地部署在第一和第二沙发之间,提供相对较大的稳定的工作表面。 本发明的浴室单元设想了独特的排水连接系统,其中洗手间排水口包括与内置在单元的壁结构中的固定排水管的排水管连接,在不需要软管,管接头等的情况下完成连接。 生活区可以用作独立设施,或者可以以临时或永久的能力,或者在露营者,船或模块化的房屋等或其他小的地方, ,但设备齐全的生活区是必需的。