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1. 发明授权

US5137050A Pressure relief valve and cryopump utilizing the same 失效
标题翻译：压力减压阀和使用它的CRYOPUMP
公开(公告)号：US5137050A
公开(公告)日：1992-08-11
申请号：US800759
申请日：1991-12-02
申请人： Hans T. Clarke , Stephen J. Yamartino , Thomas J. Dunn
发明人： Hans T. Clarke , Stephen J. Yamartino , Thomas J. Dunn
IPC分类号： F04B37/16 , F16K1/36 , F16K1/46 , F16K17/04 , F16K25/00
CPC分类号： F16K17/0466 , F16K1/465 , F16K25/00 , Y10S251/90 , Y10T137/7931 , Y10T137/7932
摘要： A self-cleaning pressure relief valve has a spring-biased valve closure with an annular contact edge which makes contact with an o-ring to seal the valve. The annular contact edge is slightly larger in radius than the central radius of the o-ring so that changing pressure on the closure causes the contact edge to slide along the surface of the o-ring.
摘要翻译：自清洁压力释放阀具有弹簧偏压阀关闭，环形接触边缘与O形环接触以密封阀。环形接触边缘的半径比O形环的中心半径略大，因此封闭件上的变化压力使得接触边缘沿着O形环的表面滑动。

2. 发明授权

US4831828A Cryogenic refrigerator having a convection system to cool a hermetic compressor 失效
标题翻译：具有对流系统以冷却封闭式压缩机的低温冰箱
公开(公告)号：US4831828A
公开(公告)日：1989-05-23
申请号：US54935
申请日：1987-05-27
申请人： Lawrence A. Klusmier , Hans T. Clarke , Gary Gatto
发明人： Lawrence A. Klusmier , Hans T. Clarke , Gary Gatto
IPC分类号： F04C29/04 , F25B9/14 , F25B31/00
CPC分类号： F25B31/006 , F04C29/04 , F25B9/14
摘要： In accordance with the invention, a hermetic refrigerant compressor pump which is used to compress helium is cooled by fins which are press fitted to the compressor's housing. The compressor is further cooled by a heat exchanger which cools oil in an oil sump located within the compressor housing. Preferably, a fan is located between the fins and the heat exchanger to help cool the pump.
摘要翻译：根据本发明，用于压缩氦气的密闭式制冷剂压缩机泵被压配合到压缩机壳体上的翅片冷却。压缩机由一个热交换器进一步冷却，热交换器冷却位于压缩机壳体内的油底壳中的油。优选地，风扇位于翅片和热交换器之间以帮助冷却泵。

3. 发明授权

US6068459A Tip seal for scroll-type vacuum pump 失效
标题翻译：涡旋式真空泵的尖端密封
公开(公告)号：US6068459A
公开(公告)日：2000-05-30
申请号：US26021
申请日：1998-02-19
申请人： Hans T. Clarke , Anthony G. Liepert
发明人： Hans T. Clarke , Anthony G. Liepert
IPC分类号： F04C25/02 , F04C18/02 , F04C27/00 , F01C1/02
CPC分类号： F04C27/005
摘要： A tip seal for use in a scroll-type vacuum pump includes a seal element and an energizer element affixed to the seal element. The scroll-type vacuum pump includes first and second scroll blades that are nested together to define one or more interblade pockets, and an eccentric drive that produces orbiting movement of the first scroll blade relative to the second scroll blade. At least one of the first and second scroll blades has a seal groove along an edge thereof. The tip seal is positioned in the seal groove between the first and second scroll blades. The energizer element is formed of a resilient material having multiple compressible voids, so that the energizer element having compressible voids is more compressible than the resilient material alone, when confined by the seal groove. In one embodiment, the energizer element is a foam such as a low porosity urethane foam. In another embodiment, the energizer element is an elastomer material having a predetermined pattern of voids.
摘要翻译：用于涡旋式真空泵的尖端密封件包括密封元件和固定在密封元件上的激发元件。涡旋式真空泵包括嵌套在一起以限定一个或多个叶片间隙的第一和第二涡旋叶片，以及产生第一涡形叶片相对于第二涡旋叶片的轨道运动的偏心驱动器。第一和第二涡旋叶片中的至少一个具有沿其边缘的密封槽。尖端密封件位于第一和第二涡形叶片之间的密封槽中。激励元件由具有多个可压缩空隙的弹性材料形成，使得具有可压缩空隙的增力元件在被密封槽限制时比单独的弹性材料更可压缩。在一个实施方案中，增能元件是泡沫，例如低孔聚氨酯泡沫。在另一个实施例中，激发元件是具有预定图案的空隙的弹性体材料。

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