F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 41/04 (2006.01) B65D 83/48 (2006.01) F16K 1/30 (2006.01)
Patent
CA 2371314
The improved valve stem gasket of this invention comprises a flat-shaped gasket (50) with a central aperture (52) wherein the durometer of the gasket varies from a relatively low hardness value in the inner portion (A) of the gasket extending radially outward from the central aperture to a relatively higher hardness value at the radially outer portion (C) of the gasket whereat the gasket will be contacted by the upper wall portion (36) of the valve housing (26). In a preferred form of the gasket, the variation in durometer value will be gradually varied from the inner portion of the gasket to the radially outer portion of the gasket.
Ce joint statique amélioré de tige de clapet comporte un joint statique plat (50) dans lequel est ménagée une ouverture centrale (52). La dureté au duromètre de ce joint passe d'une dureté relativement peu élevée dans sa partie intérieure (A) partant radialement vers l'extérieur depuis l'ouverture centrale à une dureté relativement plus importante au niveau de sa partie extérieure radiale (C) où il entre en contact avec la paroi supérieure (36) du logement de clapet (26). Dans un mode de réalisation préféré de ce joint statique, les variations de dureté au duromètre sont progressives de la partie intérieure du joint en direction de sa partie extérieure.
Kirby Eades Gale Baker
Precision Valve Corporation
LandOfFree
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