DIAPHRAGM DEVICE AND PRESSURE CONTROL RESERVOIR USING THE SAME
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United States of America Patent
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Issued Date -
Nov 14, 2013
app pub date -
Apr 29, 2013
filing date -
May 11, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A diaphragm device that supports a diaphragm with sandwiching an annular attaching portion, in an axis direction, provided at outer circumference of a flexible film by the support member having a diaphragm mounting portion, wherein at least three protrusions are provided at an outer circumference of the annular attaching portion, and each of the at least three protrusions equally protrudes in a radial direction, and wherein when the annular attaching portion is compressed in the axis direction, each of the at least three protrusions contacts with an inner circumference of the diaphragm mounting portion which faces an outer circumference of the annular attaching portion.
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