Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve
Reexamination Certificate
2006-02-28
2006-02-28
Nguyen, Tuan (Department: 3751)
Valves and valve actuation
With means to increase head and seat contact pressure
Seat pressed to valve
C251S172000, C251S309000, C251S329000
Reexamination Certificate
active
07004452
ABSTRACT:
A method of sealing a valve engaging member to a valve body about a borehole and structure thereof. Two seal members disposed on either side of the valve engaging member include a seat member adjacent the valve engaging member and a pocket insert adjacent the seat member. The pocket inserts fit within first and second pockets of the valve body. A C-shaped seal ring is disposed between the seat member and pocket insert, and two U-shaped seal rings are disposed between the pocket insert and the valve body. One of the U-shaped seal rings between the pocket insert and the valve body functions both as a radial seal ring and a retaining ring.
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HP&T Products, Inc.
Nguyen Tuan
Slater & Matsil L.L.P.
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