Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Reexamination Certificate
2007-07-20
2010-02-02
Hepperle, Stephen (Department: 3753)
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
C137S508000
Reexamination Certificate
active
07654282
ABSTRACT:
An easy-type water pressure reducing apparatus comprises a connecting tube having a bore extending through an inlet end and an outlet end. The bore has an annular seat with a smaller-diameter inlet chamber integrally extending at both sides to which a movable element with an inlet port to receive a spring element is mounted. The movable element also includes positioning guide blocks to fit to water-guiding vents of the inlet chamber, and a ringed groove with a sealing ring to abut tight against the inlet chamber, forming a back-and-forth movable positioning space there-between. Therefore, when water pressure at the outlet end is larger than that at the inlet end, water flow blocked by a water plug of the movable element will push the movable element towards the inlet end, compressing the spring element and closing the water-guiding vents gradually to reduce the water flow and stabilize the water pressure thereby.
REFERENCES:
patent: 2726790 (1955-12-01), Woelfer
patent: 2991797 (1961-07-01), Baldwin
patent: 5213132 (1993-05-01), Comment
patent: 2002/0088495 (2002-07-01), Semeia
Hepperle Stephen
Senniger Powers LLP
Yuan Mei Corp.
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