Gate valve
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United States of America Patent
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Apr 4, 2017
Grant Date -
Jun 25, 2015
app pub date -
Nov 1, 2012
filing date -
Nov 25, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A gate valve is provided with a main body, and a sealing member which comes into contact with the peripheral edge of a gate when the gate valve is closed. The sealing member includes a protruding first section and a protruding second section which are disposed to extend along the peripheral edge of the main body and protrude from the primary surface when the gate valve is open. A protrusion amount of the first section from the primary surface is greater than a protrusion amount of the second section from the primary surface. The first section is disposed inner to the inner periphery of the primary surface than the second section.
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