Control head
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United States of America Patent
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N/A
Issued Date -
Sep 29, 2011
app pub date -
Mar 26, 2010
filing date -
Mar 26, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A control head includes a valve seat, a shaft module, an elastic member and a cap. The valve seat includes a shaft tube, and interconnected intake tube and discharge tube extended separately from the shaft tube. The shaft module having an end passed inside the shaft tube includes a moving rod, a conical piston sheathed onto a lower end of the moving rod, and an oblique surface formed separately at internal ends of the intake and discharge tubes and corresponding to an oblique surface of the conical piston. Both ends of the elastic member contained inside the shaft tube are pressed against the valve seat and the shaft module, and a cap is covered onto the valve seat, and another end of the shaft module is passed out of the cap and coupled to a press button, such that the control head can provide smooth downward pressing and resuming movements.
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