Recherche dans les collections de brevets nationales et internationales
Une partie du contenu de cette demande n'est pas disponible pour le moment.
Si cette situation persiste, contactez-nous auObservations et contact
1. (WO1986003137) VALVE DE RETENUE MELANGEUSE EN FORME DE T ET PROCEDE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

What is claimed is:
1. A valve for mixing fluids, comprising:
a housing having at least a first inlet, a second inlet and an outlet, said first and second inlets and said outlet intersecting at a valve chamber where said first and second inlets may be selectively placed in fluid communication with said outlet;
seal means positioned within said valve chamber for preventing fluid communication of said first and second inlets with said outlet when the fluid pressure in said first and second inlets is below a predetermined value and for deforming upon application of a pressurized fluid having fluid pressure greater than said predetermined value to one of said first and second inlets to permit fluid flow from said pressurized inlet to said outlet and for preventing from flowing from the other of said first and second inlets to either of said outlet or to_ said pressurized inlet.
2. The valve of claim 1 wherein said seal means is formed of an elastomeric material that is inert to the fluids being transferred from said pressurized inlet to said outlet.
3. The valve of claim 2 wherein said elastomeric material is formed to have a void therein.
4. The valve of claim 1 further including:
a valve core retained within said valve chamber, said valve core having a first passage in fluid
communication with said first inlet, a second passage in fluid communication with said second inlet, and a third passage in fluid communication with said outlet, said valve core including a core cavity where said first, second and third passages intersect to selectively provide fluid flow paths from said first and second passages to said third passage;

an elastomeric seal retained within said core cavity to control fluid flow from said first and second passages to said third passage in response to application of pressurized fluid to said first and second inlets.
5. The valve of claim 3 wherein said elastomeric material is formed to have a void therein.
6. The valve of claim 3 further including:
a pair of plugs positioned adjacent opposite sides of said elastomeric seal; and
means for compressing said elastomeric seal to form fluid tight seals around said first and second passages to prevent fluid flow from said first and second inlets to said outlet.
7. The valve of claim 6 wherein said compressing means includes:
a pair of plugs mounted on opposite sides of said elastomeric seal; and
cover means mounted to said housing for retaining said plugs in compression against said elastomeric seal.

8. A method for selectively placing one of a plurality of fluid inlets in fluid communication with an outlet, comprising the steps of:
forming a housing having at least a first inlet, a second inlet, and an outlet such that said first and second inlets and said outlet intersect at a valve chamber for selectively transferring fluids from one of said first and second inlets to said outlet;
placing a pressure-controlled seal in said valve chamber to prevent fluid flow from said first and second inlets when the pressure in said first and second inlets is below a predetermined valve; and
pressurizing one of said first and second inlets with a fluid to break the seal between said pressurized inlet and said valve chamber to permit fluid flow from said pressurized inlet to said outlet.

9. The method of claim 8 further including the step of forming said seal of an elastomeric material.
10. The method of claim 9 further including the step of forming said seal to have a void therein.
11. The method of claim 8 further including the steps of:
placing a valve core having passages in fluid communication with each said inlets and said outlet inside said valve chamber;
placing said seal inside said valve core; and
applying compression to said seal to prevent fluid communication from said first and second inlets to said outlet.
12. The method of claim 11 further including the step of forming said seal of* an elastomeric material.
13. The method of claim 12 further including the step of forming said elastomeric material to have a void therein.