Techniques for adjusting for actuator non-linearities in a data storage system
    31.
    发明申请
    Techniques for adjusting for actuator non-linearities in a data storage system 失效
    用于调整数据存储系统中的致动器非线性的技术

    公开(公告)号:US20060186756A1

    公开(公告)日:2006-08-24

    申请号:US11062224

    申请日:2005-02-18

    IPC分类号: H01L41/09

    CPC分类号: G11B5/584

    摘要: The invention provides techniques for adjusting for actuator non-linearities in a data storage system. The invention is particularly useful for piezoelectric actuators, such as actuators that implement a bimorph piezoelectric crystal structure or a laminate piezoelectric crystal structure, although other actuators may present similar non-linearity issues. In one embodiment, the invention provides a method comprising applying a signal to an actuator of a data storage system, the actuator having a non-linear response, wherein the signal includes a linear drive component and a non-linear adjustment component, and positioning a data storage head with respect to a data storage medium via the actuator.

    摘要翻译: 本发明提供了用于调整数据存储系统中的致动器非线性的技术。 本发明对于诸如实现双压电晶片压电晶体结构的致动器或层压型压电晶体结构的压电致动器特别有用,尽管其它致动器可能呈现类似的非线性问题。 在一个实施例中,本发明提供了一种方法,包括将信号施加到数据存储系统的致动器,所述致动器具有非线性响应,其中所述信号包括线性驱动部件和非线性调节部件, 数据存储头相对于数据存储介质。

    DUAL ACTUATORS FOR READ-WHILE-WRITE RECORDING SYSTEM
    32.
    发明申请
    DUAL ACTUATORS FOR READ-WHILE-WRITE RECORDING SYSTEM 失效
    用于阅读写入记录系统的双执行器

    公开(公告)号:US20060126212A1

    公开(公告)日:2006-06-15

    申请号:US11012795

    申请日:2004-12-14

    IPC分类号: G11B21/02 G11B5/55

    CPC分类号: G11B5/584 G11B5/00826

    摘要: The invention provides a read-while-write recording system for a linear data storage medium, such as magnetic tape or other data storage medium in which data is stored on parallel data tracks that extend along a length of the medium. The invention makes use of separate sliders for the read and write elements, and separate actuators to control the positioning of the sliders. Each of the sliders may also include servo elements to read servo marks. In this manner, the write elements of a first slider can be positioned independently from the read elements of a second slider in order to achieve improved head positioning with respect to data tracks on the linear data storage medium.

    摘要翻译: 本发明提供了一种用于线性数据存储介质的读写同时记录系统,例如磁带或其他数据存储介质,其中数据存储在沿着介质长度延伸的并行数据轨道上。 本发明利用用于读取和写入元件的单独的滑块,以及单独的致动器来控制滑块的定位。 每个滑块还可以包括用于读取伺服标记的伺服元件。 以这种方式,第一滑块的写入元件可以独立于第二滑块的读取元件定位,以便相对于线性数据存储介质上的数据轨道实现改进的头位置。

    Process and related apparatus for repairing aquatic propeller scars
    36.
    发明申请
    Process and related apparatus for repairing aquatic propeller scars 审中-公开
    修复水上螺旋桨伤痕的工艺及相关设备

    公开(公告)号:US20050034641A1

    公开(公告)日:2005-02-17

    申请号:US10278219

    申请日:2002-10-23

    申请人: James Anderson

    发明人: James Anderson

    IPC分类号: A01G9/00 A01G31/00 A01C5/00

    CPC分类号: A01G9/00 A01C11/003 A01G24/50

    摘要: A process and apparatus for planting aquatic plants underwater on the bottom of estuaries in propeller scars and for encouraging plant growth in propeller scars. Aquatic plant shoots are transplanted by positioning shoots in a sediment tube which is in turn placed in the propeller scar. When the sediment tube is placed in the propeller scar the sea grass shoots are held in position for an extended period of time to allow the sea grass shoots to take root on the estuary bottom. The sediment tubes may be preformed or they may be formed just prior to their placement in the estuary. A watercraft may be used to position the sediment tubes with and without sea grass shoots over an area of the propeller scar. With the process and apparatus of this invention, sea grass plants can be replanted on the bottom of an estuary and new plant growth encouraged in propeller scars. Further in accordance with another embodiment of this invention a tube or other obstruction without plant shoots is placed in a propeller scar in order to impede water flow through the propeller scar. When water flow through the propeller scar is impeded natural plant growth is encouraged.

    摘要翻译: 一种用于在水下植入水下植物的方法和装置,在螺旋桨疤痕的河口底部,并鼓励植物生长在螺旋桨疤痕中。 通过将沉淀管放置在螺旋桨疤痕中的沉淀管中将水生植物芽移植。 当沉积管放置在螺旋桨疤痕中时,海草长时间保持在适当的位置,以使海草在河口底部扎根。 沉积管可以预先形成,或者它们可以在其放置在河口之前形成。 可以使用一艘船只将沉积管放置在海底scar an的区域内。 利用本发明的方法和装置,可以将海草植物重新安置在河口底部,并在螺旋桨疤痕中鼓励新的植物生长。 此外,根据本发明的另一个实施例,将没有植物芽的管或其他阻塞物放置在螺旋桨疤痕中,以阻止水流过螺旋桨疤痕。 当水流过螺旋桨疤痕受阻时,鼓励天然植物生长。

    Synthesis of 1-acetoxy-2-methylnaphthalene
    39.
    发明授权
    Synthesis of 1-acetoxy-2-methylnaphthalene 失效
    1-乙酰氧基-2-甲基萘的合成

    公开(公告)号:US5670698A

    公开(公告)日:1997-09-23

    申请号:US699259

    申请日:1996-08-19

    CPC分类号: C07C67/297 C07C67/18

    摘要: A one pot process is provided in which a Mannich base of the formula 5 is reacted with acetic anhydride to produce a diacetate derivative. Without any intermediate isolation, the derivative is hydrogenated to produce a reaction mixture containing 1-acetoxy-2-methylnaphthalene which is readily precipitated from the reaction mixture by addition of water. ##STR1##

    摘要翻译: 提供一锅法,其中式5的曼尼希碱与乙酸酐反应以产生二乙酸酯衍生物。 在不进行任何中间分离的情况下,将衍生物氢化以产生含有1-乙酰氧基-2-甲基萘的反应混合物,其通过加入水容易地从反应混合物中沉淀。 5

    Rotary lawn mower accessories
    40.
    发明授权
    Rotary lawn mower accessories 失效
    旋转割草机配件

    公开(公告)号:US4715173A

    公开(公告)日:1987-12-29

    申请号:US741111

    申请日:1985-06-04

    申请人: James Anderson

    发明人: James Anderson

    IPC分类号: A01D34/73 A01D42/00 A01D55/00

    摘要: The invention provides accessories for use with a rotary lawn mower in which the conventional bar having oppositely facing cutting edges is replaced with an accessory bar to which a variety of grass grooming accessories can be easily attached. The accessory bar can accommodate replaceable grass cutting elements, grass mulching elements and lawn power raking elements. The elements can be replaced without removing the accessory bar from the mower and are balanced to reduce vibration. Two of the accessories have cutting edges which are factory sharpened on relatively low cost elements, and thus can be discarded when blunt and replaced with new, low cost factory sharpened elements, thus maintaining balance. The rake accessory has a variation which permits a fine adjustment of vertical height of the rake above the lawn, to accommodate lawn mowers having coarse or no height adjustment.

    摘要翻译: 本发明提供了一种用于旋转割草机的附件,其中具有相对面切割刃的常规杆被替换为可容易地附着各种草地修饰附件的附件杆。 附件酒吧可以容纳可更换的草切割元素,草地覆盖元素和草坪动力耙子。 可以更换元件,而不需要从割草机上取下附件杆,并平衡以减少振动。 其中两个配件具有在相对较低成本的元件上工厂削尖的切削刃,因此可以在钝的时候被丢弃,并用新的低成本的工厂磨削元件代替,从而保持平衡。 耙子配件具有允许对草坪上方的耙的垂直高度进行微调的变化,以适应具有粗糙或没有高度调节的割草机。