Unfreeze faucet structure

Fluid handling – Removable valve head and seat unit – Threaded into valve casing

Reexamination Certificate

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Details

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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patent: 7140390 (2006-11-01), Berkman et al.
patent: 2006/0157124 (2006-07-01), Li et al.
patent: 2006/0266418 (2006-11-01), Klee
patent: 2008/0083466 (2008-04-01), Hsueh

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