Reduced shock separation fastener
    2.
    发明授权
    Reduced shock separation fastener 有权
    减震冲击分离紧固件

    公开(公告)号:US06352397B1

    公开(公告)日:2002-03-05

    申请号:US09495629

    申请日:2000-05-31

    IPC分类号: F16B3708

    摘要: A separable threaded fastener tightened to hold two objects together with an axial preload on the fastener. Fastener structure minimizes mechanical shock loads on contiguous structures when elements of the fastener are abruptly separated from one another to release the objects. A stator and a rotor having ramp surfaces provide for relief of the axial preload at the time of separation thereby reducing mechanical shock on contiguous structures.

    摘要翻译: 可分离的螺纹紧固件被紧固以将两个物体保持在紧固件上的轴向预载。 当紧固件的元件突然彼此分离以释放物体时,紧固件结构使连续结构上的机械冲击载荷最小化。 具有斜面的定子和转子提供了在分离时释放轴向预载荷,从而减少对连续结构的机械冲击。

    No-shock separation mechanism
    3.
    发明授权
    No-shock separation mechanism 失效
    无冲击分离机制

    公开(公告)号:US5248233A

    公开(公告)日:1993-09-28

    申请号:US951185

    申请日:1992-09-25

    摘要: A retaining mechanism for an externally threaded part or element which can release without exerting a shock load to the structure which it assembles. The retaining mechanism has a spring biased shiftable ring which retains three threaded nut segments by peripheral surface contact on aligned external cylindrical surfaces of the segmented nut. The retained threaded nut segments maintain threaded engagement with a threaded part to form an assembly. The threaded segments are distanced from the assembled structure by a column of Titanium-Nickel shape memory alloy (SMA) material that has been pre-worked to an increased length at a temperature below its transition temperature from face-centered to body-centered structure so that the column will shrink in length upon the application of heat. A heating element is incorporated within or about the SMA column. Preload induced in the assembled threaded part and the assembled structure is relieved by heating of the SMA column which allows the SMA material shrink to its original length thus relieving the preload of the assembled part and structure. The relief of preload in turn allows the spring-biased load retainer ring to move out of engagement with the threaded nut segments. The assembled structure may thereafter gently separate when abrupt separable forces are exerted.

    摘要翻译: 用于外螺纹部件或元件的保持机构,其可以释放而不会对其组装的结构施加冲击负载。 保持机构具有弹簧偏置的可移动环,其通过圆周表面接触在分段螺母的对准的外部圆柱形表面上而保持三个螺母螺母段。 保持的螺母螺母段与螺纹部分保持螺纹接合以形成组件。 螺纹段通过钛 - 镍形状记忆合金(SMA)材料柱离开组装结构,该柱已经在低于其转变温度的温度下从面心到身体中心结构预加工到增加的长度,所以 该柱在施加热量时将长度缩小。 加热元件结合在SMA柱内或周围。 在组装的螺纹部分和组装结构中引起的预加载通过加热SMA柱而减轻,这允许SMA材料收缩到其原始长度,从而减轻了组装的部件和结构的预加载。 预压的减轻又允许弹簧偏置的负载保持环移动离开与螺母螺母段的接合。 此后,当施加突然的可分离力时,组装的结构可以轻轻地分离。

    Preparation of highly alkaline silicates
    4.
    发明授权
    Preparation of highly alkaline silicates 失效
    高碱性硅酸盐的制备

    公开(公告)号:US4118463A

    公开(公告)日:1978-10-03

    申请号:US804485

    申请日:1977-06-07

    IPC分类号: B01J19/00 C01B33/32

    摘要: Alkaline silicates such as sodium metasilicate are prepared by a method that prevents unreacted batch ingredients to come in contact with furnace walls. The method also prevents any molten material from contacting the floor of the furnace. The raw materials and unreacted melt are confined to the central portion of the furnace by maintaining vigorous bubbling around the periphery of the melting furnace. The vigorous bubbling action prevents migration of unreacted raw material to the furnace walls. The bubbling eminates from means that extend up from the furnace floor and therefore, the portion of the material in the lower part of the furnace bed is in the solid state.

    摘要翻译: 通过防止未反应的批料成分与炉壁接触的方法制备硅酸钠如硅酸钠。 该方法还防止任何熔融材料接触炉底。 原料和未反应的熔体通过在熔炉的周围保持剧烈的鼓泡而被限制在炉的中心部分。 剧烈的鼓泡作用防止未反应的原料迁移到炉壁。 起泡从燃烧炉底部延伸出来,因此炉床下部的部分材料处于固态。