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    • 31. 发明授权
    • Saw blade shank
    • 锯刀柄
    • US06588310B2
    • 2003-07-08
    • US09891052
    • 2001-06-25
    • Chang Hyun LeeJoon Ho Chang
    • Chang Hyun LeeJoon Ho Chang
    • B27B3314
    • B23D61/026Y10T83/9319Y10T83/9377Y10T83/9403
    • The present invention relates to an improvement of the conventional sandwiched type saw blade shank by providing, as the intermediate layer, a coated thin sheet with tens of electro-conductive points or a thin sheet with multiple contacts to enhance weldability and to minimize the thermal deform or pressed marks, so that sound absorption, noise reduction and also heat dissipation may be maximized during a high speed cutting operation. The invention provides a saw blade shank with cutting tips on the circumference of the shank, comprising two or more conductive steel plates (22,24) and coated thin sheet (30) as an intermediate layer inserted between the neighboring conductive steel plates, the coated thin sheet being coated so as to leave a plurality of uncoated areas (32a) on at least one of its surfaces, whereby the coated thin sheets (30) and the steel plates (22,24) are integrally combined by multi-contact thermal fusion through a predetermined high pressure and electric current concentrated on the uncoated areas (32a).
    • 本发明涉及通过提供具有数十个导电点的涂覆薄片或具有多个触点的薄片作为中间层来改进传统的夹式锯片柄,以增强可焊性并使热变形最小化 或按压标记,使得在高速切割操作期间可以使吸声,噪音降低和散热最大化。 本发明提供了一种在柄的圆周上具有切割尖端的锯片柄,包括两个或更多个导电钢板(22,24)和作为插入相邻导电钢板之间的中间层的涂覆薄片(30),涂层 薄片被涂覆以在其至少一个表面上留下多个未涂覆区域(32a),由此涂覆的薄片(30)和钢板(22,24)通过多接触热熔融 通过集中在未涂覆区域(32a)上的预定高压和电流。
    • 32. 发明授权
    • Core drill
    • 核心钻
    • US06564887B2
    • 2003-05-20
    • US09887102
    • 2001-06-25
    • Jae Hyun HongChang Hyun LeeSee Hyung Kim
    • Jae Hyun HongChang Hyun LeeSee Hyung Kim
    • E21L1302
    • B28D1/041Y10T408/81
    • The present invention relates to a core drill wherein initial drilling workability is improved through reduced frictional resistance on the segment tips, when they are seated on the surface of an article to start cutting operation, and wherein cutting scraps or sludge produced by the segment tips are smoothly discharged through the helical grooves formed on the core body so as to reduce the friction between the core body and the cutting scraps or sludge, whereby both the cooling and cutting performance of the core drill are improved. The invention proposes a core drill with a cylindrical core body with a predetermined diameter and length and with plural cutting segments provided on the lower part of a core body at a finite interval, wherein the cutting thickness surface of the cutting segment consists of inclined sharp thickness portion for decreased frictional resistance with an article to be processed.
    • 芯钻技术领域本发明涉及一种芯钻,其特征在于,当初始钻孔加工性能降低时,通过降低分段末端的摩擦阻力,当它们被放置在制品的表面上以开始切割操作时,其中切割由分段末端产生的碎屑或污泥 通过形成在芯体上的螺旋槽顺利排出,以减少芯体与切屑或污泥之间的摩擦,从而提高了芯钻的冷却和切割性能。 本发明提出一种具有预定直径和长度的圆柱形芯体的芯钻,并且具有以有限间隔设置在芯体的下部上的多个切割段,其中切割段的切割厚度表面由倾斜的尖锐厚度 与待处理物品摩擦阻力降低的部分。
    • 40. 发明申请
    • Nonvolatile Memory Devices and Methods of Operating Same to Inhibit Parasitic Charge Accumulation Therein
    • 非易失性存储器件和操作方法相同以抑制其中的寄生电荷积累
    • US20090129165A1
    • 2009-05-21
    • US12191434
    • 2008-08-14
    • Chang Hyun LeeJung-Dal ChoiYoung-Ho LimKang-Deog Suh
    • Chang Hyun LeeJung-Dal ChoiYoung-Ho LimKang-Deog Suh
    • G11C16/04G11C16/06
    • G11C16/0483G11C16/16
    • Methods of operating a charge trap nonvolatile memory device include operations to erase a first string of nonvolatile memory cells by selectively erasing a first plurality of nonvolatile memory cells in the first string and then selectively erasing a second plurality of nonvolatile memory cells in the first string, which may be interleaved with the first plurality of nonvolatile memory cells. This operation to selectively erase the first plurality of nonvolatile memory cells may include erasing the first plurality of nonvolatile memory cells while simultaneously biasing the second plurality of nonvolatile memory cells in a blocking condition that inhibits erasure of the second plurality of nonvolatile memory cells. The operation to selectively erase the second plurality of nonvolatile memory cells may include erasing the second plurality of nonvolatile memory cells while simultaneously biasing the first plurality of nonvolatile memory cells in a blocking condition that inhibits erasure of the first plurality of nonvolatile memory cells.
    • 操作电荷阱非易失性存储装置的方法包括通过选择性地擦除第一串中的第一多个非易失性存储单元,然后选择性地擦除第一串中的第二多个非易失性存储单元来擦除第一串非易失性存储单元的操作, 其可以与第一多个非易失性存储器单元交错。 选择性地擦除第一多个非易失性存储单元的操作可以包括擦除第一多个非易失性存储单元,同时在禁止擦除第二多个非易失性存储单元的阻塞条件下同时偏置第二多个非易失性存储单元。 选择性地擦除第二多个非易失性存储单元的操作可以包括擦除第二多个非易失性存储单元,同时在禁止擦除第一多个非易失性存储单元的阻塞条件下同时偏置第一多个非易失性存储单元。