Pressure regulator incorporating a pressure balanced moving...

Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface

Reexamination Certificate

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Details

C137S495000

Reexamination Certificate

active

07343929

ABSTRACT:
An adjustable pressure control valve includes a body having an inlet port and an outlet port and a handle assembly having a threaded portion and an adjustment knob. A seat assembly disposed within the body includes a seat holder in communication with the outlet port that is received on the threaded portion of the handle assembly, wherein the seat holder is translatable in first and second directions when the handle assembly is rotated in first and second directions. The seat assembly also includes a valve seat fluidly affixed to the seat holder, wherein fluid can pass through the valve seat and the seat holder. The valve includes a pin biased by a pin spring that is engageable with the valve seat, and a main spring engageable with the pin to urge the pin against the valve seat to accommodate the pressure and volume of the fluid in the valve.

REFERENCES:
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patent: 3461909 (1969-08-01), Vohringer
patent: 4275758 (1981-06-01), Masuda
patent: 4348159 (1982-09-01), Acheson
patent: 4493335 (1985-01-01), Watson
patent: 4516600 (1985-05-01), Sturman et al.
patent: 4635683 (1987-01-01), Nielsen
patent: 4744387 (1988-05-01), Otteman
patent: 5501247 (1996-03-01), Miller
patent: 6026849 (2000-02-01), Thordarson
patent: 6050292 (2000-04-01), Richman et al.
patent: 6758240 (2004-07-01), Gregoire
patent: 7051755 (2006-05-01), Zuck
patent: 2004/0138025 (2004-07-01), Yamaguchi

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