Claims
- 1. A sanitary water valve comprising a stationary cylinder having at least one water inlet orifice, a rotatable and longitudinally shiftable piston positioned in said cylinder to control the flow of water through said at least one water inlet orifice from a closed to an opened position; said cylinder having a longitudinal extending continuous lengthwise slot and said piston and cylinder having mating surfaces, which form a watertight, mechanical seal between their mating surfaces without the necessity of using static seal means.
- 2. A sanitary water valve comprising:
- a stationary cylinder having a longitudinal bore therethrough and having a longitudinal slot extending along the length of the cylinder wall;
- said cylinder having at least one water inlet orifice and a water outlet orifice formed in its wall;
- a rotatable and longitudinally shiftable piston positioned in said longitudinal bore and having water passage means to control the flow of water to said water outlet orifice from said at least one water inlet orifice;
- said piston having a diameter slightly greater than the diameter of the cylinder bore; and
- said piston and said cylinder having mating surfaces so that when said oversized piston is inserted into said cylinder bore, said oversized piston expands the cylinder causing compressive radial forces to be exerted against said mating surfaces of said piston and said cylinder to form a watertight, mechanical seal without the necessity of using static seal means.
- 3. The sanitary valve, according to claim 2, wherein the axis of the cylinder bore is offset from, but parallel to, the axis of said cylinder.
- 4. The sanitary water valve, according to claim 2, wherein at least the outer surface of said piston and the inner surface of said cylinder is formed of a high content aluminium oxide.
- 5. The sanitary water valve, according to claim 2, wherein the wall thickness of the cylinder increases beginning from the longitudinal slot and increase to a maximum wall thickness along the section of the cylinder wall diametrically opposite said slot.
- 6. The sanitary water valve, according to claim 2, wherein said cylinder includes cold and warm water inlet orifices and an outlet orifice, said inlet orifices and said outlet orifice being positioned on said cylinder at the same longitudinal distance with respect to one end thereof.
- 7. The sanitary water valve, according to claim 6, wherein each of said inlet orifices has a greater length dimension in horizontal direction than the horizontal length dimension of the outlet orifice.
- 8. The sanitary water valve, according to claim 2, wherein said longitudinal slot is formed between the inlet orifices and is disposed opposite said outlet orifice.
- 9. The sanitary water valve, according to claim 2, wherein said piston includes a transverse channel which connects said at least one inlet orifice with said outlet orifice.
- 10. The sanitary water valve, according to claim 9, wherein said piston is shaped in the form of a pipe body.
- 11. The sanitary water valve, according to claim 2, which includes O-ring packings mounted on said cylinder wall in surrounding relation to said at least one inlet orifice and said outlet orifice to provide a watertight seal between the corresponding water inlet and water discharge orifices of said valve and said cylinder.
- 12. The sanitary water valve, according to claim 2, wherein said cylinder includes a longitudinal extending rib formed on each side of said longitudinal extending slot and a pair of spaced apart longitudinal extending ribs, and said at least one inlet orifice is positioned between said pair of ribs.
- 13. The sanitary water valve, according to claim 12, includes a pair of generally cup-shaped bearings positioned, respectively, on the upper and lower ends of said cylinder, each cup-shaped bearing having complimentary, generally semicircular sections formed around the rim of its open end and each semicircular section being separated by a longitudinal extending slot, each slot corresponding to said longitudinal ribs of said cylinder.
- 14. The sanitary water valve, according to claim 13, wherein said complimentary semicircular sections of said upper and lower cup-shaped bearings provide seat means for mounting O-ring packings on said cylinder in surrounding relation to said at least one water inlet orifice and said outlet orifice to provide a watertight seal between said cylinder and the corresponding water inlet and outlet orifices of said sanitary valve.
- 15. The sanitary water valve, according to claim 2, includes a counter bearing having at least one water inlet orifice and an outlet orifice corresponding to said at least one inlet orifice and said outlet orifice of said cylinder, the surfaces defining said orifices in said counter bearing providing means for mounting O-ring packings therein to effect a watertight seal between said orifices of said cylinder and the corresponding orifices of said sanitary valve.
- 16. The sanitary water valve, according to claim 15, wherein said counter bearing is in the form of a metal sleeve.
- 17. The sanitary water valve, according to claim 2, wherein the upper horizontal edge of said outlet orifice is positioned on the cylinder wall above the upper horizontal edge of said at least one inlet orifice.
- 18. The sanitary water valve, according to claim 2, wherein the lower horizontal edge of said outlet orifice is positioned between lower and upper horizontal edges of said at least one inlet orifice.
- 19. The sanitary water valve, according to claim 3, wherein the difference between axial center lines of said cylinder and said cylinder bore is at least 1.0 mm.
- 20. A valve assembly adapted to be operably coupled to a sanitary water valve, said valve assembly comprising;
- a cylinder having a longitudinal bore therethrough and having a longitudinal slot extending along the length of the cylinder wall;
- said cylinder having at least one water inlet orifice and a water outlet orifice formed in its wall;
- a rotatable and longitudinally shiftable piston positioned in said longitudinal bore and having water passage means to control the flow of water to said water outlet orifice from said at least one water inlet orifice;
- said piston having a diameter slightly greater than the diameter of the cylinder bore; and
- said piston and said cylinder having mating surfaces so that when said oversized piston is inserted into said cylinder bore, said oversized piston expands the cylinder causing compressive radial forces to be exerted against said mating surfaces of said piston and said cylinder to form a watertight, mechanical seal without the necessity of using static seal means.
- 21. The valve assembly, according to claim 20, wherein the axis of the cylinder bore is offset from, but parallel to, the axis of said cylinder.
- 22. The valve assembly, according to claim 20, wherein at least the outer surface of said piston and the inner surface of said cylinder is formed of a high content aluminium oxide.
- 23. The valve assembly, according to claim 20, wherein the wall thickness of the cylinder increases beginning from the longitudinal slot and increases to a maximum wall thickness along the section of the cylinder wall diametrically opposite said slot.
- 24. The valve assembly, according to claim 20, wherein each of said at least one inlet orifice has a greater length dimension in horizontal direction than the horizontal length dimension of the outlet orifice.
- 25. The valve assembly, according to claim 20, wherein said cylinder includes a longitudinal extending rib formed on each side of said longitudinal extending slot and a pair of spaced apart longitudinal extending ribs, and said at least one inlet orifice is positioned between said pair of ribs.
- 26. The valve assembly, according to claim 25, includes a pair of generally cup-shaped bearings positioned, respectively, on the upper and lower ends of said cylinder, each cup-shaped bearing having complimentary, generally semicircular sections formed around the rim of its open end and each semicircular section being separated by a longitudinal extending slot, each slot corresponding to said longitudinal ribs of said cylinder.
- 27. The valve assembly, according to claim 20, includes a counter bearing having at least one water inlet orifice and an outlet orifice corresponding to said at least one inlet orifice and said outlet orifice of said cylinder, the surfaces defining said orifices in said counter bearing providing means adapted to mount O-ring packings therein to effect a watertight seal between said orifices of said cylinder and the corresponding orifices of said sanitary valve.
- 28. The valve assembly, according to claim 27, wherein said counter bearing is in the form of a metal sleeve.
- 29. The valve assembly, according to claim 20, wherein the upper horizontal edge of said outlet orifice is positioned on the cylinder wall above the upper horizontal edge of said at least one inlet orifice.
- 30. The valve assembly, according to claim 20, wherein the lower horizontal edge of said outlet orifice is positioned between lower and upper horizontal edges of said at least one inlet orifice.
- 31. The valve assembly, according to claim 21, wherein the difference between axial center lines of said cylinder and said cylinder bore is at least 1.0 mm.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3224991 |
Jul 1982 |
DEX |
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CROSS REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of application Ser. No. 06/509,126, filed 06/30/83 now abandoned.
US Referenced Citations (11)
Foreign Referenced Citations (4)
Number |
Date |
Country |
896438 |
Oct 1956 |
DEX |
1103097 |
Oct 1961 |
DEX |
2904555 |
Aug 1979 |
DEX |
2945834 |
Nov 1980 |
DEX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
509126 |
Jun 1983 |
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