Fluid handling – Processes – Cleaning – repairing – or assembling
Reexamination Certificate
2006-10-20
2010-11-23
Lee, Kevin L (Department: 3753)
Fluid handling
Processes
Cleaning, repairing, or assembling
C137S315170, C251S315080, C251S315160
Reexamination Certificate
active
07836909
ABSTRACT:
A rotatable wedge valve mechanism has a valve body or valve cartridge defining a valve chamber and flow ports in fluid communication with the valve chamber. A valve seat is located within the valve chamber in registry with one of the flow ports. A non-rotatable core member having a convex external surface portion is supported within said valve chamber. A wedge member is mounted for rotation within the valve chamber and has a range of rotary motion between open and closed positions of said valve and a non-uniform wall thickness throughout said range of rotary motion. An actuator upon rotary movement achieves opening and closing rotation of said wedge member. A method is provided for machining concave and convex wedge member surfaces from selected center-points to achieve relative thicknesses of wall sections of the wedge member.
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Burleson Cooke L.L.P.
Cooke, Jr. Claude E.
Hemiwedge Valve Corporation
Lee Kevin L
LandOfFree
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