Fluid handling – Removable valve head and seat unit – Threaded into valve casing
Reexamination Certificate
2010-05-20
2011-12-20
Bastianelli, John (Department: 3753)
Fluid handling
Removable valve head and seat unit
Threaded into valve casing
C137S614200, C137S625310, C251S208000, C251S333000
Reexamination Certificate
active
08079382
ABSTRACT:
An unfreeze faucet structure includes a watering control valve having a body; a control shaft, an upper ceramic member, and a lower ceramic member connected with the body; a valve seat locked to the body; wherein the control shaft includes a watering cavity and a positioning groove mounted in a lower section thereof, the watering cavity includes a check element and a stopping unit installed therein, the check element includes a disk-shaped cover arranged on a bottom end thereof, the cover includes a first stop loop fitted to a peripheral side thereof, between the cover and the watering cavity is defined with a spring, the stopping unit includes a trench disposed therearound to contact with the first stop loop, the control shaft includes a second stop loop fitted on an outer periphery thereof and a third stop loop arranged therearound to engage with an inner wall of the watering cavity.
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Bastianelli John
Kamrath Alan
Kamrath IP Lawfirm PA
LandOfFree
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