Vandal resistant and tamper proof pneumatic push button assembly for moving a volume of fluid
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United States of America Patent
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Jul 28, 1987
Grant Date -
N/A
app pub date -
Jan 28, 1986
filing date -
Jan 28, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A push button assembly for moving a volume of fluid out of and into a port. The assembly has a housing containing a rubber-domed diaphragm. The domed diaphragm is designed so that it is deformable but readily returns to its original shape. The pressing of the push button depresses the diaphragm, thereby forcing air or other fluid out of the exit port. When the button is released, the diaphragm returns to its original shape pulling fluid back through the port.
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