Attic stair assemblies and methods of installing attic stair assemblies

    公开(公告)号:US11293185B1

    公开(公告)日:2022-04-05

    申请号:US17118937

    申请日:2020-12-11

    Abstract: Disclosed herein are attic stair assemblies, in which each attic stair assembly may include: a frame that may include: a first wall; and a second wall; a stair coupled to the frame closer to the first wall than the second wall; a floorboard disposed above the stair; a port extending through the frame and the floorboard; and a support frame removably coupled to the floorboard that may include: a first leg having a first leg upper end, wherein the first leg may be closer to the first wall than the second wall; and a second leg having a second leg upper end, wherein the second leg may be shorter than the first leg and may be closer to the first wall than the second wall; and a rail portion extending from the first leg upper end to the second leg upper end at a first acute angle to the floorboard.

    System and method for providing access to a database during a recovery process
    3.
    发明授权
    System and method for providing access to a database during a recovery process 有权
    在恢复过程中提供对数据库的访问的系统和方法

    公开(公告)号:US07801865B1

    公开(公告)日:2010-09-21

    申请号:US11968037

    申请日:2007-12-31

    CPC classification number: G06F17/30348

    Abstract: Methods and systems for providing access to spaces in a database during a recovery process affecting the database. Spaces in the database that are affected by the recovery process are identified and I/O requests sent to a media manager associated with the database are intercepted. If the I/O request is for a read operation to a space affected by the recovery process and the corresponding page has been recovered, the data in the page may be read. If the page has not been recovered, the read operation may be held in a cache until the recovery utility indicates that the page has been recovered. If the I/O request is for a write operation to a space affected by the recovery process, the data may be written to a cache.

    Abstract translation: 在影响数据库的恢复过程中提供对数据库空间的访问的方法和系统。 识别受恢复过程影响的数据库中的空间,并且发送到与数据库关联的媒体管理器的I / O请求被拦截。 如果I / O请求用于对受恢复过程影响的空间的读取操作,并且相应的页面已被恢复,则可能会读取页面中的数据。 如果页面尚未恢复,则读取操作可以保存在缓存中,直到恢复实用程序指示页面已被恢复。 如果I / O请求用于对受恢复过程影响的空间的写入操作,则可将数据写入高速缓存。

    Separation of 2,4-toluenediamine from an isomeric mixture of toluenediamines
    4.
    发明授权
    Separation of 2,4-toluenediamine from an isomeric mixture of toluenediamines 失效
    从甲苯二胺的异构体混合物中分离2,4-甲苯二胺

    公开(公告)号:US06469212B1

    公开(公告)日:2002-10-22

    申请号:US09531210

    申请日:2000-03-20

    CPC classification number: C07C209/86 C07C211/50

    Abstract: A mixture comprised of about 60-85% of 2,4-toluenediamine (2,4-TDA) and about 15-40% of 2,6-toluenediamine (2,6-TDA) is melted, the temperature of the mixture is lowered to a 2,4-TDA nucleation temperature, and the temperature of the mixture is gradually reduced from the nucleation temperature to about 65 to about 70° C. The resultant mixture is in the form of a solids phase enriched in 2,4-TDA, and a novel and useful liquid phase enriched in 2,6-TDA. These phases are separated. Preferably the solids are further purified by “sweating” them and removing the sweated liquid impurities. The sweated liquid can be recycled together with another charge of a mixture comprised of 2,4-TDA and 2,6-TDA. 2,4-TDA can be produced with a purity of 96-99%.

    Abstract translation: 将由约60-85%的2,4-甲苯二胺(2,4-TDA)和约15-40%的2,6-甲苯二胺(2,6-TDA)组成的混合物熔化,混合物的温度为 降低至2,4-TDA成核温度,并且混合物的温度从成核温度逐渐降低至约65至约70℃。所得混合物为富含2,4-二甲酸的固体相的形式, TDA,以及富含2,6-TDA的新型有用的液相。 这些阶段是分开的。 优选地,通过将​​它们“出汗”并除去出汗的液体杂质来进一步纯化固体。 可以将出汗的液体与另一种由2,4-TDA和2,6-TDA组成的混合物一起再循环。 可以生产纯度为96-99%的2,4-TDA。

    Arctic drilling base
    5.
    发明授权
    Arctic drilling base 失效
    北极钻井基地

    公开(公告)号:US4080798A

    公开(公告)日:1978-03-28

    申请号:US770239

    申请日:1977-02-18

    CPC classification number: E02B17/0021 E02B17/027

    Abstract: An arctic drilling barge to perform offshore activities in the shallow water, fast ice regions of the arctic seas. Optimal ice interaction is obtained by shaping the hull of the barge in the form of an upright frustum. Ice which does adhere to the barge is detached and melted by circulating fluid through a plurality of interior hull compartments next to the hull sidewalls of the barge.

    Abstract translation: 一艘北极钻井驳船在浅水区,北冰洋快速冰区进行近海活动。 通过以垂直平截头体的形式对驳船的船体进行成型,获得最佳的冰相互作用。 通过将流体循环通过驳船的船体侧壁旁边的多个内部船体隔室来分离并熔化粘附在驳船上的冰。

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