Scroll fluid machine with ball coupling rotation prevention mechanism
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United States of America Patent
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Jun 26, 2012
Grant Date -
Apr 2, 2009
app pub date -
Sep 29, 2008
filing date -
Sep 28, 2007
priority date (Note) -
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Abstract
This invention provides a scroll type fluid machine which can simultaneously realize the stabilization of the behavior in the rotational direction of an orbiting scroll and the reduction in the manufacturing cost by the ease of holding a grease. In the scroll type fluid machine, three pairs of rotation prevention mechanisms are provided between a casing and an orbiting scroll. The rotation prevention mechanism is constituted of first and second ball coupling mechanisms having a function different from each other. The first ball coupling mechanism supports the thrust load of the orbiting scroll. Meanwhile, the second ball coupling mechanism supports the rotation force of the orbiting scroll.
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