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公开(公告)号:US20110268380A1
公开(公告)日:2011-11-03
申请号:US12878526
申请日:2010-09-09
IPC分类号: F16C33/34
CPC分类号: F16C19/46 , F16C33/34 , F16C2240/50 , F16C2360/00 , F16C2360/42
摘要: In rollers used in a radial needle bearing, the circularity of crowning sections provided at opposite ends of each roller is 0.6 μm or smaller. This allows for reduction of sound (noise) produced when the radial needle bearing rotates by itself and can also allow for reduction of sound (noise) of a rotational machine when the radial needle bearing is installed and rotates therein.
摘要翻译: 在用于径向滚针轴承的滚子中,设置在每个滚子的相对端处的隆起部的圆度为0.6μm以下。 这允许减小当径向滚针轴承自身旋转时产生的声音(噪声),并且当径向滚针轴承安装并旋转时也可以减少旋转机器的声音(噪音)。
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公开(公告)号:US20090219004A1
公开(公告)日:2009-09-03
申请号:US12369954
申请日:2009-02-12
申请人: Takeshi HIRANO
发明人: Takeshi HIRANO
IPC分类号: G05F1/00
CPC分类号: H02M1/36 , H02M3/158 , H02M2001/0045
摘要: A power supply control device includes a boost type power supply controller boosting an input voltage, a step down power supply controller reducing an output of the boost type power supply controller to output an output voltage, a first control loop including the boost type power supply controller, and a second control loop including the step down power supply controller, wherein the output voltage is controlled by the second control loop during a predetermined period beginning after the power supply control device enters a power-on state, and wherein the output voltage is controlled by the first control loop after the predetermined period passes.
摘要翻译: 电源控制装置包括升压输入电压的升压型电源控制器,降压电源控制器,减小升压型电源控制器的输出以输出输出电压;第一控制回路,包括升压型电源控制器 以及包括降压电源控制器的第二控制回路,其中在电源控制装置进入通电状态之后的预定时段期间,由第二控制回路控制输出电压,并且其中输出电压被控制 经过预定时间段之后的第一控制回路。
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