Seat ring for valves

Details Seat ring for valves Seat ring for valves

2006-03-21

2006-03-21

Yu, Justine R. (Department: 3751)

Valves and valve actuation

Valve

Seats

Reexamination Certificate

active

07014170

ABSTRACT:
A valve seat assembly includes a valve body defining a cavity having an axis, the cavity having a threaded receiving portion and a conical contact surface substantially concentric with the threaded receiving portion. The valve seat assembly further includes a seat ring formed about a center axis having a threaded portion to engage the valve body threaded receiving portion. The seat ring also having an outer surface including a curved contact surface sized to sealingly engage the conical contact surface wherein the curved contact surface is slidable over the conical contact surface to position the seat ring so that the seat ring center axis is substantially aligned with the cavity axis.

REFERENCES:
patent: 2104419 (1938-01-01), Frye
patent: 2192339 (1940-03-01), Wilson
patent: 3467357 (1969-09-01), Schomer et al.
patent: 3746305 (1973-07-01), Zakka
patent: 4105187 (1978-08-01), Huber
patent: 4474208 (1984-10-01), Looney
patent: 4542879 (1985-09-01), Stein
patent: 5758682 (1998-06-01), Cain
patent: 6641112 (2003-11-01), Antoff et al.
patent: 6698450 (2004-03-01), Vicars
patent: 320481 (1957-03-01), None
patent: 0750163 (1996-12-01), None
patent: 233850 (1925-05-01), None
patent: 2018397 (1979-10-01), None
Copy of International Search Report for PCT/US03/38765, mailed Mar. 30, 2004, 5 pages.
Sectional and Profile views of 1018S valve product.
Inventor's drawing showing narrow angle detail of prior art valve.
Drawing from Samson website.

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