AIRTIGHT SUCTION DEVICE WITH AIR SUPPLY FUNCTION AND ROTARY SWITCH THEREOF
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United States of America Patent
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N/A
Issued Date -
Nov 28, 2013
app pub date -
May 24, 2012
filing date -
May 24, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In an airtight suction device and a rotary switch thereof, the airtight suction device includes a main body having a communication space and a plurality of connectors. These connectors include a suction connector, a respiratory connector, a cleaning connector, and a control valve connector. The rotary switch is provided on the control valve connector and includes a rotary cover and a hollow post. The hollow post has a peripheral wall and a blocking piece. The peripheral wall is provided with a pair of suction holes. The blocking piece is provided with a ventilation hole for allowing external air to flow into the suction holes.
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