Door and valve assembly for a pneumatic transmission system
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United States of America Patent
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Sep 4, 2007
Grant Date -
May 24, 2007
app pub date -
Nov 18, 2005
filing date -
Nov 18, 2005
priority date (Note) -
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Abstract
A door and valve assembly for a pneumatic transmission system including a port configured to permit ambient air to flow into a pneumatic transmission conduit, a body having a seal and configured to open and close the port and an end of the transmission conduit, and an actuator connected to the body. The seal may be configured to seal the end of the transmission conduit. The actuator is configured to move the body to open the end and port, move the body to close the end and keep the port open, and move the body to close the end and port.
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