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1. 发明授权

US06554594B2 Shaft seal structure for vacuum pump 失效
公开(公告)号：US06554594B2
公开(公告)日：2003-04-29
申请号：US10011099
申请日：2001-12-07
申请人： Shinya Yamamoto , Yoshinari Suzuki , Masahiro Ida , Masahiro Kawaguchi
发明人： Shinya Yamamoto , Yoshinari Suzuki , Masahiro Ida , Masahiro Kawaguchi
IPC分类号： F01C1900
CPC分类号： F04C27/009
摘要： A vacuum pump has a housing accommodating a rotary shaft and a gas transferring assembly driven by the rotary shaft. The housing has an exhaust passage for exhausting gas outside the housing. The gas transferring assembly creates a vacuum. A lip seal for shaft seal is disposed between a pump chamber communicating with the exhaust passage and a region in which oil exists so as to slide relative to a circumferential surface of the rotary shaft. The lip seal has a back pressure surface in a back pressure region facing the pump chamber and a pressure surface facing the region in which the oil exists. A communicating passage in the housing intercommunicates the back pressure region and the exhaust passage for applying at least substantially the pressure in the exhaust passage to the back pressure surface.

2. 发明授权

US06283739B1 Steam-driven propeller engine 失效
标题翻译：蒸汽驱动的螺旋桨发动机
公开(公告)号：US06283739B1
公开(公告)日：2001-09-04
申请号：US09402044
申请日：2000-03-09
申请人： Sergei Romanovich Berezin , Viktor Iosifovich Vedaiko , Anatoly Nikolaevich Noskov , Alexandr Georgievich Scheglov
发明人： Sergei Romanovich Berezin , Viktor Iosifovich Vedaiko , Anatoly Nikolaevich Noskov , Alexandr Georgievich Scheglov
IPC分类号： F01C1900
CPC分类号： F16J15/441 , F04C27/009
摘要： A steam driven engine having a device for equilibration of propulsion forces in the bearing assemblies produced by the steam drive and equipped with steam and oil separators. The device for equilibrating the propulsion force includes a space disposed between the drive shaft and the surrounding casing, the device being connected on one side to the pressurized steam source and on the other side to a discharge pipe via a throttle channel. The clearance is situated in the casing on both sides of the drive screws and runs along the lateral surface of the drive shaft on the portion thereof opposing the direction of the propulsion force. The steam and oil separators are provided with elements for discharge of the steam and oil.
摘要翻译：蒸汽驱动发动机具有用于平衡由蒸汽驱动器产生的并配有蒸汽和油分离器的轴承组件中的推进力的装置。用于平衡推进力的装置包括设置在驱动轴和周围壳体之间的空间，该装置在一侧连接到加压蒸汽源，另一侧通过节流通道连接到排放管。间隙位于驱动螺钉的两侧的壳体中，并沿着与推进力方向相反的部分沿着驱动轴的侧表面延伸。蒸汽和油分离器具有用于排出蒸汽和油的元件。

3. 发明授权

US06244842B1 Pump 失效
标题翻译：泵
公开(公告)号：US06244842B1
公开(公告)日：2001-06-12
申请号：US09436413
申请日：1999-11-09
申请人： James B. Tieben
发明人： James B. Tieben
IPC分类号： F01C1900
CPC分类号： F01C21/02 , F04C2/14 , F04C15/0038 , F04C15/0073 , Y10T403/7026
摘要： A hydraulic pump includes a pump mechanism having a driven shaft. The driven shaft is connected to an input shaft by a flexible coupling such as a splined connection. A housing extends completely around the driven shaft, and a high-pressure seal is disposed between the housing and the input shaft. A thrust bearing carries hydraulic axial forces on the input shaft to the housing. This arrangement provides balanced hydraulic forces on both ends of the driven shaft, thereby reducing friction and wear.
摘要翻译：液压泵包括具有从动轴的泵机构。从动轴通过诸如花键连接的柔性联接器连接到输入轴。壳体完全围绕从动轴延伸，并且高压密封件设置在壳体和输入轴之间。推力轴承将输入轴上的液压轴向力传递到壳体。这种布置在从动轴的两端提供平衡的液压力，从而减少摩擦和磨损。

4. 发明授权

US06264448B1 Open type compressor 失效
标题翻译：开式压缩机
公开(公告)号：US06264448B1
公开(公告)日：2001-07-24
申请号：US09588731
申请日：2000-06-07
申请人： Takahide Itoh , Makoto Takeuchi , Tetsuzou Ukai
发明人： Takahide Itoh , Makoto Takeuchi , Tetsuzou Ukai
IPC分类号： F01C1900
CPC分类号： F04C27/009 , Y10S418/01
摘要： This compressor 1 is for compressing an introduced working gas to a predetermined pressure and exhausting by means of the rotation of a crank shaft 5 which is rotatively supported by a front case 4 of a housing 1A by a main bearing 6, and has a partition means 31 (labyrinth seal for example) which is provided between the main bearing and a shaft seal 28 which is provided at the outer side of the main bearing along the axial direction, and separating a space in which the shaft seal is provided from a low pressure chamber 15 of the housing to form a sealing chamber 30, and a first lubricating agent supply passage 29 which is formed in the housing and is opened to the sealing chamber for supplying a lubricating agent to the sealing chamber. A part of the highly compressed lubricating agent which is supplied the sealing chamber can be leaked to the low pressure chamber via the partition means during the operation of said compressor.
摘要翻译：该压缩机1用于通过由主轴承6由壳体1A的前壳体4可旋转地支撑的曲轴5的旋转而将引入的工作气体压缩到预定的压力并排出，并且具有分隔装置在主轴承和设置在主轴承的外侧的轴密封件28之间设置有沿着轴向的主轴承（例如迷宫式密封件）31，以及将设置有轴密封件的空间从低压壳体15形成密封室30，第一润滑剂供给通道29形成在壳体中并且向密封室开口以向密封室供给润滑剂。供给密封室的高压缩润滑剂的一部分，在压缩机的运转过程中，经由分隔装置被泄漏到低压室内。

5. 发明授权

US06244841B1 Vacuum pumps 失效
标题翻译：真空泵
公开(公告)号：US06244841B1
公开(公告)日：2001-06-12
申请号：US09065505
申请日：1998-04-24
申请人： Nigel Paul Schofield , Michael Morris , Peter Hugh Birch
发明人： Nigel Paul Schofield , Michael Morris , Peter Hugh Birch
IPC分类号： F01C1900
CPC分类号： F04C27/009 , F04C2/18 , F04C11/001 , F04C18/344 , F04C2220/10
摘要： A vacuum pump comprising a pump chamber having an inlet and an outlet and through which gas from an enclosure connectable to the inlet can be pumped to a pump exhaust. At least one rotor, adapted for high velocity rotation, is provided within the chamber and mounted on a shaft extending from the chamber and to a pump gearbox substantially isolated from the chamber by means of a shaft seal associated with the shaft. The shaft seal is of a close tolerance but non-contact design. During use of the pump, gas pressure in the vicinity of the shaft seals and arising from the changeable gas pressures associated with operation of the pump rotor is buffered.
摘要翻译：一种真空泵，其包括具有入口和出口的泵室，并且可以将来自可连接到入口的外壳的气体泵送到泵排气口。至少一个适于高速旋转的转子设置在腔室内，并且安装在从腔室延伸的轴上，并且通过与轴相关联的轴密封件与泵室齿轮箱基本上隔离。轴密封是非常公差的，但非接触式设计。在泵的使用期间，缓冲了轴密封附近的气体压力并且由与泵转子的操作相关联的可变气体压力引起。

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