会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 94. 发明授权
    • Resin-made cage and bearing
    • 树脂制保持架和轴承
    • US08113718B2
    • 2012-02-14
    • US12224922
    • 2007-03-07
    • Takashi ItoShohei NakamuraMasayuki NozakiMasaki EgamiTakuya IshiiToyohiko OtaAkira OkayasuRei Mihara
    • Takashi ItoShohei NakamuraMasayuki NozakiMasaki EgamiTakuya IshiiToyohiko OtaAkira OkayasuRei Mihara
    • F16C33/44F16C33/38
    • F16C33/44F02K9/60F04D29/023F04D29/026F04D29/049F04D29/059F05D2300/43F05D2300/432F05D2300/509F16C19/163F16C33/3831F16C33/6696F16C2300/52F16C2360/42
    • It is an object of the present invention to provide a cage that can be used in a cryogenic-temperature environment or a vacuum without providing the cage with a complicated construction and without performing special treatment and a bearing using the cage. A cage made of resin has an annular main body having a plurality of pocket portions radially penetrating the main body; and a plurality of pocket members, provided on the annular main body, which hold rolling elements of a rolling bearing. The main body is a molding of a first resin composition consisting of a first resin and a solid lubricant mixed therewith; and at least a rolling element-retaining surface of each of the pocket members is made of a second resin composition containing fluorocarbon resin as a main component thereof. The molding of the first resin composition has a tensile strength of not less than 30 MPa and a heat-resistant temperature of not less than 200° C. The second resin composition is a fluorocarbon resin composition. The rolling bearing is constructed of an inner ring, an outer ring, the rolling elements interposed between the inner ring and the outer ring, and the cage. The rolling bearing is used for a turbopump, of a rocket engine, which uses a liquid fuel.
    • 本发明的一个目的是提供一种可以在低温环境或真空中使用的保持架,而不会使笼子具有复杂的构造并且不进行特殊处理和使用保持架的轴承。 由树脂构成的保持架具有环状主体,该主体具有径向穿透主体的多个口袋部; 以及设置在保持滚动轴承的滚动体的环状主体上的多个袋状部件。 主体是由第一树脂和与其混合的固体润滑剂组成的第一树脂组合物的模制品; 并且每个袋构件的至少一个滚动元件保持表面由包含氟碳树脂作为其主要成分的第二树脂组合物制成。 第一树脂组合物的成型的拉伸强度为30MPa以上,耐热温度为200℃以上。第二树脂组合物为碳氟树脂组合物。 滚动轴承由内圈,外圈,插入在内圈和外圈之间的滚动元件和保持架构成。 滚动轴承用于使用液体燃料的火箭发动机的涡轮泵。
    • 98. 发明授权
    • Step-up converter
    • 升压转换器
    • US07825646B2
    • 2010-11-02
    • US11905399
    • 2007-09-28
    • Takuya IshiiMikio MotomoriJunichi MoritaTakashi RyuMasaaki KotoMakoto IshimaruKazuhito KimuraSatoshi Wada
    • Takuya IshiiMikio MotomoriJunichi MoritaTakashi RyuMasaaki KotoMakoto IshimaruKazuhito KimuraSatoshi Wada
    • G05F1/40
    • H02M3/156
    • The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.
    • 本发明提供了一种电流模式控制升压转换器,其能够将最小占空比降低到足够小的值,并且有助于设定最大占空比。 升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。 控制电路10包括比较器11和定时器电路12.通过这种配置,主开关3的接通时间被设定为预定值,并且控制以三角波形变化的电感器电流的谷值。 因此,主开关的断开时间被调节以稳定输出。 由于可以根据需要设定主开关3的导通时间,所以可以将最小占空比降低到零或足够小的值。
    • 99. 发明申请
    • STEP-DOWN SWITCHING REGULATOR
    • 降压开关稳压器
    • US20100134078A1
    • 2010-06-03
    • US12567149
    • 2009-09-25
    • Maki MURAKAMITakuya ISHIITakashi RYU
    • Maki MURAKAMITakuya ISHIITakashi RYU
    • G05F1/10
    • H02M3/156H02J7/0065H02M2001/0022
    • A step-down switching regulator includes a switching device coupled to an input terminal to which an input voltage is applied, an inductor having a first end and a second end, the first end being connected to the switching device, a smoothing unit having an output terminal and configured to smooth a voltage at the second end of the inductor and generate an output voltage at the output terminal, a rectifier configured to flow a current to the inductor when the switching device is in an OFF state, and a control circuit configured to drive the switching device so that the output voltage becomes equal to a set target voltage. The control circuit detects a difference voltage between the input voltage and the output voltage or a difference voltage between the input voltage and the set target voltage, and causes the switching device to be in an ON state when the difference voltage is lower than or equal to a predetermined voltage value.
    • 降压开关调节器包括耦合到施加有输入电压的输入端子的开关装置,具有第一端和第二端的电感器,第一端连接到开关装置,平滑单元,具有输出端 并且被配置为平滑电感器的第二端处的电压并在输出端产生输出电压,整流器被配置为当开关器件处于断开状态时将电流流向电感器,并且控制电路被配置为 驱动开关器件,使得输出电压等于设定的目标电压。 控制电路检测输入电压和输出电压之间的差分电压或输入电压与设定的目标电压之间的差分电压,并且当差值电压低于或等于 预定的电压值。