Glass microbead filter and method of filtering
    6.
    发明授权
    Glass microbead filter and method of filtering 失效
    玻璃微珠过滤器和过滤方法

    公开(公告)号:US5366632A

    公开(公告)日:1994-11-22

    申请号:US25932

    申请日:1993-03-03

    IPC分类号: B01D37/02 B01D39/06

    CPC分类号: B01D39/06 B01D37/02

    摘要: A layered filter composite comprises a filter medium, and on the upstream surface thereof a homogeneous or graded layer of nonporous spherical glass microbeads as a filter aid. A method for filtering or prefiltering a liquid mixture is disclosed wherein a layer of glass microbeads is used as a filter or filter aid. The layered filter composite is useful in analytical applications as well as in large scale industrial and remedial (clean-up) applications.

    摘要翻译: 层状过滤复合材料包括过滤介质,并且在其上游表面上具有作为助滤剂的无孔球形玻璃微珠的均匀或分级层。 公开了一种用于过滤或预过滤液体混合物的方法,其中使用玻璃微珠层作为过滤器或助滤剂。 分层过滤器复合材料可用于分析应用以及大规模工业和补救(清理)应用。

    Separation-science membrane dispenser

    公开(公告)号:US5383573A

    公开(公告)日:1995-01-24

    申请号:US971357

    申请日:1992-11-04

    CPC分类号: B65D83/0418

    摘要: A separation-science disc dispenser (10) has a storage chamber (12) disposed normally to a base (20) that possesses a slot (24) into which a slidable member (26) resides. The storage chamber (12) contains disc units (14) that include a separation-science membrane (16) and a protective liner (18). Where the storage chamber (12) meets the base (20), there is an opening (30) in the storage chamber that allows disc units (14) to exit the storage chamber. The slidable member has a cavity (28) sized to receive a single disc unit (14) from the storage chamber (12) when the cavity (28) is in register with the opening (30). Drawing the slidable member (26) outward from slot (24) causes a single disc unit (14) to be discharged in a non-contaminated condition from the dispenser (10).

    Temperature sensitive circuit breaking element
    9.
    发明授权
    Temperature sensitive circuit breaking element 失效
    温度敏感断路元件

    公开(公告)号:US5328756A

    公开(公告)日:1994-07-12

    申请号:US829764

    申请日:1992-01-31

    摘要: A composite article comprising a fibrillated polytetrafluoroethylene (PTFE) matrix, electrically conductive particles, and energy expandable, electrically nonconductive hollow polymeric particles, which composite is conductive and allows for the flow of electricity and which, upon attaining a temperature which causes expansion of the expandable polymeric particles, becomes insulating and causes the flow of electricity to cease. The articles are thin and can be used as electrical circuit breaking elements.

    摘要翻译: 一种复合制品,其包含原纤化聚四氟乙烯(PTFE)基质,导电颗粒和能量可膨胀的非导电中空聚合物颗粒,该复合材料是导电的并且允许电流流动,并且在获得导致可膨胀的 聚合物颗粒变得绝缘,并导致电力停止。 物品薄,可用作电路断路元件。

    Separation method using controlled pore composite
polytetrafluoroethylene article
    10.
    发明授权
    Separation method using controlled pore composite polytetrafluoroethylene article 失效
    使用受控孔复合聚四氟乙烯制品的分离方法

    公开(公告)号:US5207915A

    公开(公告)日:1993-05-04

    申请号:US897110

    申请日:1992-06-11

    IPC分类号: B01D15/08 B01J20/28 G01N30/52

    摘要: A composite article having controlled void volume and mean pore size comprises:(a) polytetrafluoroethylene (PTFE) fibril matrix, and(b) insoluble, non-swellable sorptive particles enmeshed in said matrix, the ratio of non-swellable sorptive particles to PTFE is in the range of 40:1 to 1:4 by weight, the composite article having a porosity in the range of 30 to 80 percent void volume and a mean pore size in the range of 0.3 to 5 micrometers, preferably with at least 90 percent of pores having a size less than 3.6 micrometers.The article is prepared by incorporating lubricant in the precursor admixture in an amount sufficient to exceed the lubricant sorptive capacity of the particles by at least 3 weight percent and up to an amount at which the mass loses its integrity.

    摘要翻译: 具有控制的空隙体积和平均孔径的复合制品包括:(a)聚四氟乙烯(PTFE)原纤维基质,和(b)不溶的不溶胀的吸附颗粒,其嵌入所述基质中,非溶胀性吸附颗粒与PTFE的比例为 在40:1至1:4的范围内,该复合制品的孔隙率在30至80%范围内,空隙体积和平均孔径在0.3至5微米的范围内,优选至少为90% 的孔尺寸小于3.6微米。 该制品通过将前体混合物中的润滑剂以足以超过颗粒的润滑剂吸附能力至少3重量%的量并且高达质量损失其完整性的量来制备。