Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Reexamination Certificate
2006-01-17
2006-01-17
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
C137S493900
Reexamination Certificate
active
06986363
ABSTRACT:
A valve assembly for use in regulating the flow of fluid between a first fluid side and a second fluid side of a hydraulic circuit. The assembly has an insert mounted in a hydraulic component having at least a portion of the hydraulic circuit formed therein, the insert also has a first end exposed to the first fluid side, a first end opening formed on the first end and a second end open to the second fluid side. The valve assembly additionally has a valve plug retained within the second end of the insert and a valve seat surface formed on the first end of the insert. The valve assembly also has a combination check valve and pressure relief valve located within the insert between the valve seat surface and the valve plug to selectively open and close the first opening.
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Christiansen Tage
Kopel Thomas
Kryhlmand Anders
Trimble Robert E.
Hepperle Stephen M.
Hydro-Gear Limited Partnership
Neal Gerber & Eisenberg LLP
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