Claims
- 1. A flush toilet bowl comprising:
- a toilet bowl body having a bowl part and a discharge trap extending from a location proximate the bottom of the bowl part, the bowl part having a rim portion that has an upper rim surface;
- a flush water tank disposed at the back of said toilet bowl body, the flush water tank including a discharge port that opens into the flush water tank at a predetermined level, the flush water tank containing a first predetermined volume of water that is located above the level of the discharge port and adapted to be discharged through the discharge port;
- a valve assembly for sealing the discharge port so as to prevent the discharge of flush water from the tank, the valve assembly including a valve body that is movable between a closed position wherein the valve body blocks the discharge opening so as to prevent the discharge of flush water from the tank and an open position wherein the valve body is spaced from the discharge port so that flush water may be discharged from the tank through the discharge port,
- the valve assembly, including a valve body having a predetermined weight, the valve body being supported on a support arm having a predetermined weight, the support arm being pivotably supported within the tank about an axis that is spaced from the valve body;
- the valve assembly further comprising a force transmitting member for allowing a user to move the valve body from the closed position to the open position to initiate flushing, the valve assembly being designed to allow the valve body to return to the closed position so as to prevent the discharge of flush water from the tank before the entire first predetermined volume of water that is located above the level of the discharge port is discharged through the discharge port whereby only a second predetermined volume of water, which is less than the first predetermined volume of water, is discharged through the discharge port so that the difference between first predetermined volume of water that is located above the level of the discharge port and the second predetermined volume of water, which is actually discharged through the discharge port is a third volume of water that is used to pressurize the water that is actually discharged;
- wherein the weight of the valve body and support arm being arranged relative to the pivot axis such that the valve body is always biased into the closed position so as to being moving toward the closed position without delay upon release of the force transmitting member by the user; and
- a water passage connecting the discharge port to the toilet bowl.
- 2. A flush toilet bowl as claimed in claim 1, wherein the first predetermined volume of water that is located above the level of the discharge port and adapted to be discharged through the discharge port is greater than 6 liters and wherein the second predetermined volume of water is 6 liters or less.
- 3. A flush toilet bowl as claimed in claim 1, wherein the water passage connecting the discharge port to the toilet bowl includes a jet water path that connects the discharge port of said flush water tank to a jet water delivery port provided facing the inlet of said discharge trap;
- said jet water path having a bent part turning the direction of flow toward the jet water delivery port before the jet water delivery port, and said jet water delivery port being provided in the vicinity thereof with a means for revising a distribution of the velocity of flow, said means performing the revision of the distribution of the velocity of flow so that the velocity of flow substantially in the center of the jet water delivery port becomes the maximum.
- 4. A flush toilet bowl as claimed in claim 3, wherein the means for revising the distribution of the velocity of flow is of a construction of the axis of said jet water delivery port being offset to the inner peripheral side of said bent part.
- 5. A flush toilet bowl as claimed in claim 3, wherein the means for revising the distribution of the velocity of flow comprises an inclined surface formed by tilting the bottom of the bent part of the jet water path toward the inner peripheral side.
- 6. A flush toilet bowl as claimed in claim 3, wherein the bent part of the jet water path is formed having a radius of curvature of 20 to 30 mm.
- 7. A flush toilet bowl as claimed in claim 3, wherein the jet water path has a cross-sectional area which amounts to 0.3 to 0.6 times the cross-sectional area of the discharge trap.
- 8. A flush toilet bowl as claimed in claim 1, wherein the discharge port is positioned substantially at the same level as the rim surface of the toilet bowl body.
- 9. A flush toilet bowl as claimed in claim 1, wherein the force transmitting member allows a user to hold the valve body in the open position so as to discharge a volume of water that is greater than the second predetermined volume of water.
- 10. A flush toilet bowl as claimed in claim 1, wherein the valve body is free to return to the closed position so as to prevent the discharge of flush water from the tank when the force transmitting member is released by the user.
- 11. A flush toilet bowl as claimed in claim 1, wherein the flush water tank is formed so that it has a water level greater than 120 mm, but only the volume contained in a height of 100 to 120 mm is discharged during flushing.
- 12. A flush toilet bowl as claimed in claim 1, wherein the discharge port has a diameter between 70 and 75 mm.
- 13. A flush toilet bowl comprising:
- a toilet bowl body that includes a bowl part having an upper end and a lower end with a bottom part at the lower end and a discharge trap extending from the bottom of said bowl part, the discharge trap including a rising channel having an upper end and a lower end and the rising channel extending in the obliquely upward direction from the bottom of the bowl part; a first weir formed at the upper end of said rising channel; a descending channel extending downwardly from said first weir; and a cross-laid channel extending substantially horizontally from the lower end of said descending channel and having a discharge opening at the end thereof,
- said cross-laid channel being provided with an upwardly bent second weir between the lower end of said descending channel and the discharge opening, and being formed with a gathered water part between said second weir and the lower end of said descending channel,
- said descending channel being formed in the vicinity of the lower end thereof with a horizontal part extending horizontally toward said cross-laid channel
- the flush toilet further comprising a flush water tank disposed at the back of said toilet bowl body, the flush water tank including a discharge port that opens into the flush water tank at a predetermined level, the flush water tank containing a first predetermined volume of water that is located above the level of the discharge port and adapted to be discharged through the discharge port;
- a valve assembly for sealing the discharge port so as to prevent the discharge of flush water from the tank, the valve assembly including a valve body that is movable between a closed position wherein the valve body blocks the discharge opening so as to prevent the discharge of flush water from the tank and an open position wherein the valve body is spaced from the discharge port so that flush water may be discharged from the tank through the discharge port, the valve assembly, including a valve body having a predetermined weight, the valve body being supported on a support arm having a predetermined weight, the support arm being pivotably supported within the tank about an axis that is spaced from the valve body and the weight of the valve body and support arm being arranged relative to the pivot axis such that the valve body is always biased into the closed position, the valve assembly further comprising a force transmitting member for allowing a user to move the valve body from the closed position to the open position to initiate flushing; and
- a water passage connecting the discharge port to the toilet bowl.
- 14. A flush toilet bowl as claimed in claim 13, wherein the valve assembly is designed to allow the valve body to return to the closed position so as to prevent the discharge of flush water from the tank before the entire first predetermined volume of water that is located above the level of the discharge port is discharged through the discharge port whereby only a second predetermined volume of water, which is less than the first predetermined volume of water, is discharged through the discharge port so that the difference between first predetermined volume of water that is located above the level of the discharge port and the second predetermined volume of water, which is actually discharged through the discharge port is a third volume of water that is used to pressurize the water that is actually discharged, and wherein the first predetermined volume of water that is located above the level of the discharge port and adapted to be discharged through the discharge port is greater than 6 liters and wherein the second predetermined volume of water is 6 liters or less.
- 15. A flush toilet bowl as claimed in claim 13, wherein the water passage connecting the discharge port to the toilet bowl includes a jet water path that connects the discharge port of said flush water tank to a jet water delivery port provided facing the inlet of said discharge trap;
- said jet water path having a bent part turning the direction of flow toward the jet water delivery port before the jet water delivery port, and said jet water delivery port being provided in the vicinity thereof with a means for revising a distribution of the velocity of flow, said means performing the revision of the distribution of the velocity of flow so that the velocity of flow substantially in the center of the jet water delivery port becomes the maximum.
- 16. A flush toilet bowl as claimed in claim 13, wherein the gathered water part between said second weir and the lower end of said descending channel is formed so as to provide a ventialtion space above the gathered water part, and the horizontal part is provided substantially at the level of 2/3 the distance from said surface of the gathered water to said ventilating space.
- 17. A flush toilet bowl as claimed in claim 13, wherein the first weir is formed having a radius of curvature which is 0.9 to 1.4 times as large as the diameter of the discharge trap.
- 18. A flush toilet bowl as claimed in claim 13, wherein the descending channel of the discharge trap is substantially in the form of a cylinder having a length of 100 to 150 mm and extending substantially in the vertically downward direction from the first weir.
- 19. A flush toilet bowl as claimed in claim 13, wherein the second weir and the discharge opening of the cross-laid channel continue by way of a downward bent part, and said downward bent part is formed having a radius of curvature which is 0.7 to 1.2 times as large as the diameter of the discharge trap.
- 20. A flush toilet bowl as claimed in claim 13, wherein the discharge trap is substantially identical in the cross sectional area from the inlet thereof to the discharge opening.
- 21. A flush toilet bowl as claimed in claim 13, wherein the discharge port has a diameter between 70 and 75 mm.
- 22. A flush toilet bowl as claimed in claim 13, wherein the valve body is arranged and supported so as to begin moving toward the closed position without delay upon release of the force transmitting member by the user.
- 23. A flush toilet bowl as claimed in claim 13, wherein the valve body and support arm are arranged such that the total weight supported on the support arm remains essentially unchanged throughout operation.
- 24. A flush toilet bowl as claimed in claim 13, wherein the valve body is disc shaped and supported at the end of the support arm.
- 25. A flush toilet bowl as claimed in claim 13, wherein an overflow tube is provided in the flush water tank and the support arm is pivotally supported to overflow tube.
- 26. A flush toilet bowl as claimed in claim 13, wherein the valve body is supported on a plurality of support arms.
- 27. A flush toilet bowl as claimed in claim 13, wherein the support arm has first and second ends and the support arm is pivotably supported within the tank at a location between the first and second ends of the support arm so that, when viewed in a plane transverse to the pivot axis, the support arm has a first end portion on one side of the support arm pivot axis and a second end portion on the other side of the support arm pivot axis and wherein the valve body is supported on the first end portion of the support arm and the location of the support arm pivot axis is such that the total weight supported on the first end portion of the support arm is always greater than the total weight supported on the second end portion of the support arm.
- 28. A flush toilet bowl as claimed in claim 27, further comprising means for a counter balance on the second end portion of the support arm so as to adjust the total weight supported on the second end portion.
- 29. In a flush toilet of the type comprising a toilet bowl body having a bowl part and a discharge trap extending from a location proximate the bottom of the bowl part, the bowl part having a rim portion that has an upper rim surface; a flush water tank disposed at the back of said toilet bowl body, the flush water tank including a discharge port that opens into the flush water tank at a predetermined level; a valve assembly for sealing the discharge port so as to prevent the discharge of flush water from the tank, the valve assembly including a valve body that is movable between a closed position wherein the valve body blocks the discharge opening so as to prevent the discharge of flush water from the tank and an open position wherein the valve body is spaced from the discharge port so that flush water may be discharged from the tank through the discharge port, the valve assembly, including a valve body having a predetermined weight, the valve body being supported on a support arm having a predetermined weight so that the support arm has a center of gravity, the support arm being pivotably supported within the tank about an axis that is spaced from the valve body; and the weight of the valve body and support arm being arranged relative to the pivot axis such that the valve body is always biased into the closed position the valve assembly further comprising a force transmitting member that is actuatable by a user to move the valve body from the closed position to the open position to initiate flushing; and a water passage connecting the discharge port to the toilet bowl;
- a process for improving flushing performance while using a predetermined volume of water, the process comprising the steps of:
- supporting the predetermined volume of water in a the flush water tank with additional water above the level of the discharge port so that the total volume of water contained above the level of the discharge port in the tank is greater than the predetermined volume;
- moving the valve body from the closed position to the open position upon actuation of the force transmitting member by the user to initiate flushing so as to discharge the predetermined volume of water through the discharge port, while maintaining the valve body in a position whereby the weight of the valve body and support arm bias the valve body into the closed position;
- moving the valve body to the closed position without delay upon release of the force transmitting member by the user so as to prevent the discharge of flush water from the tank before additional water located above the level of the discharge port is discharged through the discharge port;
- whereby only the predetermined volume of water, which is less than the total volume of water above the level of the discharge port, is discharged through the discharge port so that the difference between the volume of water that is located above the level of the discharge port and predetermined volume of water, which is actually discharged through the discharge port is used to pressurize the water that is actually discharged.
- 30. The process of claim 29, further comprising the steps of:
- guiding water through a jet water path that extends from the discharge port to the a jet water delivery port provided facing the inlet of said discharge trap, wherein the jet water path has a bent part turning the direction of flow toward the jet water delivery port before the jet water delivery port; and
- revising the distribution of the velocity of flow so that the velocity of flow substantially in the center of the jet water delivery port becomes the maximum.
- 31. A flush toilet bowl as claimed in claim 1, wherein the valve body and support arm are arranged such that the total weight supported on the support arm remains essentially unchanged throughout operation.
- 32. A flush toilet bowl as claimed in claim 1, wherein the valve body is disc shaped and supported at the end of the support arm.
- 33. A flush toilet bowl as claimed in claim 1, wherein an overflow tube is provided in the flush water tank and the support arm is pivotally supported to overflow tube.
- 34. A flush toilet bowl as claimed in claim 1, wherein the valve body is supported on a plurality of support arms.
- 35. A flush toilet bowl as claimed in claim 1, wherein the support arm has first and second ends and the support arm is pivotably supported within the tank at a location between the first and second ends of the support arm so that, when viewed in a plane transverse to the pivot axis, the support arm has a first end portion on one side of the support arm pivot axis and a second end portion on the other side of the support arm pivot axis and wherein the valve body is supported on the first end portion of the support arm and the location of the support arm pivot axis is such that the total weight supported on the first end portion of the support arm is always greater than the total weight support on the second end portion of the support arm.
- 36. A flush toilet bowl as claimed in claim 35, further comprising means for a counter balance on the second end portion of the support arm so as to adjust the total weight supported on the second end portion.
Priority Claims (3)
Number |
Date |
Country |
Kind |
6-328664 |
Dec 1994 |
JPX |
|
7-85780 |
Apr 1995 |
JPX |
|
7-151882 |
Jun 1995 |
JPX |
|
RELATED APPLICATIONS
This application is a continuation-in-part of U.S. application Ser. No. 08/860,419 which is the national stage application corresponding to International Application PCT/JP95/02722 filed Dec. 27, 1995, which application is currently pending.
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1-138980 |
Sep 1989 |
JPX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
860419 |
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