Telescopic hydraulic hoist apparatus
    2.
    发明授权
    Telescopic hydraulic hoist apparatus 失效
    伸缩式液压起重机

    公开(公告)号:US5983778A

    公开(公告)日:1999-11-16

    申请号:US901089

    申请日:1997-07-28

    申请人: Steve Dawson

    发明人: Steve Dawson

    IPC分类号: F15B15/16 F01B7/20

    CPC分类号: F15B15/16

    摘要: A telescoping hydraulic hoist formed from a non-corrosive material provides bearings and hydraulic seals about the bottom portion of each intermediate moving stage. The bearings and hydraulic seals are thus always maintained within the hoist and are not exposed to dust or particulate matter from outside the hoist. Air flows into and out of the air spaces between adjacent stages through air breathers. The hoist may also include variable length stroke limiters, and a cushion member which partially closes off the hydraulic inlet as the innermost stage is fully retracted to slow the hoist motion in the final stages of retraction.

    摘要翻译: 由非腐蚀性材料形成的伸缩液压起重机围绕每个中间移动台的底部提供轴承和液压密封。 因此,轴承和液压密封件总是保持在起重机内,并且不会从起重机外部暴露于灰尘或颗粒物质。 空气通过空气呼吸器流入和流出相邻级之间的空气间。 起重机还可以包括可变长度行程限制器,以及缓冲构件,其在最内侧段完全缩回时部分地封闭液压入口,以在最后的缩回阶段减慢起重运动。

    Cast iron alloy and method of making the same
    3.
    发明授权
    Cast iron alloy and method of making the same 失效
    铸铁合金及其制作方法

    公开(公告)号:US06613274B2

    公开(公告)日:2003-09-02

    申请号:US10151933

    申请日:2002-05-22

    申请人: Steve Dawson

    发明人: Steve Dawson

    IPC分类号: C22C3700

    CPC分类号: C22C37/06 C22C33/08

    摘要: The invention provides a cast iron alloy comprising 3.0-3.8% carbon, 06-25% silicon, 0.2-0.65% manganese, 0.01-0.1% tin,

    摘要翻译: 本发明提供一种铸铁合金,其包含3.0-3.8%的碳,06-25%的硅,0.2-0.65%的锰,0.01-0.1%的锡,<0.025%的硫,0.001-0.020%的镁,0.1-1.2%的铜,0.04 -0.2%的铬,平衡高达100%的铁和杂质。 基体结构是连续变化的铁素体/珠光体混合物,碳化物含量小于1%。 该合金的石墨形状为150%片状石墨,50-99%压实石墨和至多10%球形石墨。 这种合金比普通压实石墨铸铁更容易加工并且不容易收缩。

    On-line production control of cast irons by measuring the surface
tension of the base treated iron
    4.
    发明授权
    On-line production control of cast irons by measuring the surface tension of the base treated iron 失效
    通过测量底座处理过的铁的表面张力来对铸铁进行在线生产控制

    公开(公告)号:US5891213A

    公开(公告)日:1999-04-06

    申请号:US952768

    申请日:1997-11-28

    申请人: Steve Dawson

    发明人: Steve Dawson

    CPC分类号: C21C1/10 G01N13/02 G01N33/206

    摘要: The surface tension of a sample quantity of molten iron from a batch of molten iron is determined and compared with the surface tension of the sample with the surface tensions of batches of molten iron that are known to solidify as respective different forms of cast iron. The surface tension of the molten iron sample is determined by adding the sample to a sample cup, submerging a device for introducing a noble gas into the molten iron of the sample, positioning a piezoelectric transducer at the bottom of the sample cup, administrating the noble gas at a constant rate through the device, measuring the temperature of the sample, and monitoring vibrations in the molten iron of the sample by recording signals from the transducer.

    摘要翻译: PCT No.PCT / SE96 / 00659 Sec。 371日期1997年11月28日 102(e)日期1997年11月28日PCT提交1996年5月21日PCT公布。 第WO96 / 38595号公报 日期1996年12月5日确定来自一批铁水的样品量的铁水的表面张力,并与已知凝固成各种不同形式的铁水的表面张力与样品的表面张力进行比较 的铸铁。 铁水样品的表面张力通过将样品添加到样品杯中,浸没用于将惰性气体引入样品的铁水的装置,将压电换能器定位在样品杯的底部,施加贵金属 通过装置以恒定速率的气体,测量样品的温度,以及通过记录来自换能器的信号来监测样品的铁水中的振动。