Slide valve device for automatic surface pressure application
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United States of America Patent
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Aug 23, 2011
Grant Date -
Jul 23, 2009
app pub date -
Jun 4, 2007
filing date -
Jun 7, 2006
priority date (Note) -
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Abstract
A slide valve device for automatic surface pressure application including a slide valve having a three-layer structure, in which the movable bodies of the seal case is slidable on a support surface of a spring holder. The slide case and the seal case are coupled with each other by means of a coupling device or a coupling stopper, and the cases are slid together by means of an actuator so as to apply and release a surface pressure.
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