Baths – closets – sinks – and spittoons – Flush closet – Tank only
Patent
1996-10-28
1998-12-22
Walczak, David J.
Baths, closets, sinks, and spittoons
Flush closet
Tank only
4379, E03D 134
Patent
active
058506390
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a tank device for flushing a toilet bowl and, more particularly, a tank device which allows an amount of water remaining in the tank after a discharge of flush water to be made smaller and, further, allows the stored water in the tank to be efficiently used as flush water.
BACKGROUND ART
In a tank device for storing flush water (tank device for flushing a toilet bowl) used for a flush toilet bowl, an attempt has been made to make a tank body smaller in size from the requirements of saving water, restricting the height and dimensions. In order to make the tank body smaller in size, it is necessary to efficiently use the water stored in the tank. Previously, attempts have been made to release an amount of water remaining in the tank after a discharge of flush water, in order to efficiently use the stored water in the tank. For example, in the invention described in JP-A Sho-60-27780, a discharge valve, provided in the tank, is constructed so that it closes the valve later than the drop of a water level in the tank.
In this known tank device, a float chamber provided with a small hole at the bottom thereof is formed in the tank and is made to communicate with the interior of the tank through the small hole. When the water level drops at the time of water discharge, the drop of the water level in the float chamber occurs later than that of the water level in the tank. A float connected to a valve body of the discharge valve is housed in the float chamber and the timing when the float drops is delayed. After a discharge of the stored water in the tank is nearly finished, the valve body is adapted to be brought into a seating engagement with a discharge valve seat to close the discharge valve.
In the above-described known tank device, the discharge valve is complicated in construction and it is difficult to cause the float to smoothly drop within the float chamber. These is a problem in that a faulty motion of the discharge valve is apt to occur. Moreover the device is expensive.
The present invention has been made taking such points into consideration, and aims at providing a toilet bowl-flushing tank device having a delayed water discharge function which includes a discharge valve simple in construction and allowing a stable motion thereof to be performed.
SUMMARY OF THE INVENTION
In order to achieve the above-described object, a tank device for flushing a toilet bowl according to the present invention comprises opening at the bottom; supports within said tank body; into close contact with the opening of said tank body; support arms coming into close contact with the opening; and which gives to said valve body a motion of being moved away from said opening.
According to the present invention, the delaying means attached to the support arms allows a pivotable motion of the valve body toward the opening of the tank body to be delayed, thereby enabling the timing of when the valve body comes into close contact with the opening to be delayed. This allows the stored water within the tank body to be efficiently used as flush water for a toilet bowl.
According to a preferred form of the invention, the support arms have other ends extending in the direction opposite the valve body with the pivotable supports interposed therebetween, and a planar damping plate is secured to said other ends.
According to an another preferred form of the invention, the support arms between the valve body and the pivotable supports of the support arms comprise two members pivotably connected with each other.
According to a further preferred form of the invention, a delaying means for delaying the pivotable motion of the valve body toward the opening of the tank body is fitted to the pivotable supports of said support arms.
According to a further preferred form of the invention, the tank device for flushing a toilet bowl is equipped with one or more support arms having the other ends thereof extending in the direction opposite the valve body with the pivotable supports interposed therebetwee
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patent: 2270989 (1942-01-01), Asselin
patent: 3142846 (1964-08-01), Lackenmaier et al.
patent: 3964109 (1976-06-01), Street et al.
patent: 4134165 (1979-01-01), Phripp et al.
patent: 4483024 (1984-11-01), Troeh
patent: 4910813 (1990-03-01), Applegart
patent: 5293650 (1994-03-01), Schoepe et al.
patent: 5673441 (1997-10-01), Wang
Arita Kinya
Matsushita Hiroyuki
Shibata Shinji
Toto Ltd.
Walczak David J.
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