F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 1/12 (2006.01) F16K 1/34 (2006.01)
Patent
CA 2335733
A seat cup seal for a valve includes a base portion and a nipple portion projecting outwardly from the base portion. The nipple portion and said base portion define a blind bore about a longitudinal axis that opens in the base portion. The nipple portion defines a transverse end wall at an outermost end relative to the base that is adapted for sealingly engaging an associated valve seat. A flexible shoulder portion interconnects the base portion and the nipple portion so that said nipple portion is selectively movable between a first, relaxed position where the transverse end wall is spaced a first distance from the base and a second, retracted position where the transverse end wall is spaced a second distance from the base, with the second distance being less than the first distance. A plurality of biasing ribs projects outwardly from and extending between the base portion and the nipple portion. The biasing ribs, which are conformed in one of several suitable arrangements, bias or urge the nipple portion toward the first position when it is in its second position. In this manner, the seat cup does not require a coil spring or other separate biasing agent to urge the transverse end wall into sealing engagement with the associated valve seat.
Kawolics Raymond P.
Labinski Jeffery J.
Sim & Mcburney
The Meyer Company
LandOfFree
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