Capacitor
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United States of America Patent
Stats
-
Mar 29, 2011
Grant Date -
Jun 17, 2010
app pub date -
Oct 3, 2007
filing date -
Oct 16, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pressure control valve provided on a terminal plate of a capacitor includes a filter, a valve body and a cap. The filter is provided so as to close a through-hole disposed in a terminal plate and is composed of a gas permeable sheet preventing permeation of the electrolyte solution. The valve body is formed of an elastic material, has a cylindrical part and a bottom part, and is disposed so that the bottom part covers the through-hole of the terminal plate. The cap is fixed to the terminal plate, covers the valve body, and holds the valve body in a composed state with respect to the terminal plate. The cap is provided with a vent hole. The valve body and the filter are spaced apart from each other.
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