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    • 1. 发明申请
    • COMPACT PORTABLE LIFT ASSEMBLY
    • 紧凑型便携式组件
    • WO2017031587A1
    • 2017-03-02
    • PCT/CA2016/050998
    • 2016-08-24
    • SMITH, David W.
    • SMITH, David W.
    • B66B9/16B66B11/04B66B9/08B66B9/193
    • B66B9/08B66B9/083B66B9/16B66B9/193
    • A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Components of the lift are stored in a base portion of the lift and are assembled on site for forming a lift frame extending between the upper and lower surfaces. A platform and drive assembly are supported on the lift frame and are driven together up and down tracks on each side of the lift frame using a rotary drive, such as a hand crank or electric motor, to power the drive assembly. The drive assembly is operable by a person on or off the platform from either the upper or lower surface or traversing stairs over which the platform is moving. The drive assembly incorporates a unique overspeed braking system and a unique clutch arrangement.
    • 在没有用于在下表面和上表面之间提起载荷的现有装置或者不能使用现有装置的情况下,便携式起重机相对紧凑且重量轻,用于运输和使用。 升降机的部件被存储在升降机的基座部分中,并在现场组装以形成在上表面和下表面之间延伸的起重机架。 平台和驱动组件支撑在升降机架上,并且使用诸如手动曲柄或电动机的旋转驱动器在升降机框架的每一侧上上下驱动,以驱动驱动组件。 驱动组件可由位于平台上或离开平台的人从上平台或下表面或穿过平台移动的楼梯操作。 驱动装置包含独特的超速制动系统和独特的离合器装置。
    • 6. 发明申请
    • REMOVAL OF IMPURITIES IN THE PRODUCTION OF CRYSTALLINE SODIUM CARBONATE, BICARBONATE, OR SULFITE
    • 去除碳酸钙,碳酸氢钠或硫酸钠生产中的污染物
    • WO2010100264A1
    • 2010-09-10
    • PCT/EP2010/052845
    • 2010-03-05
    • SOLVAY CHEMICALS, INC.SOLVAY SAPHILLIP, James D.MOTE, Jessica A.SMITH, David W.
    • PHILLIP, James D.MOTE, Jessica A.SMITH, David W.
    • C01D5/14C01D5/16C01D7/26
    • C01D5/14C01D5/16C01D7/26
    • A magnesium treatment for removing water-soluble impurities in a process for making crystalline sodium carbonate, bicarbonate, or sulfite. A waste comprising such impurities is treated with a magnesium compound to form water-insoluble matter which is removed to form a purified solution. The treatment may be performed on a solution which contains the waste and optionally dissolved calcined trona. The purified solution may be used as a feedstock to form crystalline soda ash, and/or used as a reactant to produce crystalline sodium sulfite or bicarbonate via reaction with SO2 or CO2. In preferred embodiments, the waste may comprise a purge or weak liquor, a reclaimed solid, or combinations thereof. The water-soluble impurities may be silicates and/or foam-causing organics, and the waste may contain sodium bicarbonate, sodium sesquicarbonate, and/or one or more sodium carbonate hydrates, such as decahydrate.
    • 在制造结晶碳酸钠,碳酸氢盐或亚硫酸盐的方法中除去水溶性杂质的镁处理。 包含这种杂质的废物用镁化合物处理以形成水不溶性物质,其被除去以形成纯化溶液。 处理可以在含有废物和任选溶解的煅烧天然碱的溶液上进行。 纯化的溶液可以用作原料以形成结晶苏打灰,和/或用作反应物以通过与SO 2或CO 2反应产生结晶亚硫酸钠或碳酸氢盐。 在优选实施方案中,废物可以包含吹扫或弱液,再生固体或其组合。 水溶性杂质可以是硅酸盐和/或发泡的有机物,并且废物可以含有碳酸氢钠,倍半碳酸钠和/或一种或多种碳酸钠水合物,例如十水合物。