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US 5,204,999 AGranted
Flush water supply system for toilet stool
AssigneeToto Ltd.
InventorsAtsuo Makita, Hirofumi Takeuchi, Shinji Shibata, Noboru Shimbara
Life of this patent
Estimating the term…
Abstract
A flush water supply system comprising a passageway valve mounted in a pipeline for supplying flush water to a toilet stool, and a control circuit for controlling the closing and opening of the passageway valve. A constant flow valve is mounted in the pipeline for keeping a predetermined amount of discharge flow, irrespective of water supply pressure.
Claims10
A flush water supply system for a toilet, comprising:
- (a) a toilet stool having a plurality of supply ports;
- (b) a pipeline means for supplying flush water to said toilet stool, said pipeline means including a plurality of branched pipelines each having an end connected to a respective one of said supply ports of said toilet stool;
- (c) means for differentiating the flows of said branched pipelines from one another, wherein said differentiating means is comprised of a plurality of constant flow valves mounted one in each of said branched pipelines for obtaining a predetermined amount of discharge flow, the constant flow valves including a water passage and means for adjusting the cross-sectional area of the water passage after the water supply pressure reaches a predetermined value;
- (d) a plurality of electrically operable valves mounted one in each of said branched pipelines upstream from said constant flow valve;
- (e) a starting-of-flushing input means for accepting an input for starting the supply of flush water;
- and
- (f) a control means for driving the electrically operable valves in a preset order in response to the input for starting the supply of flush water, and for keeping said electrically operable valve in an opened position for a preset period of time.
4 more elements
A flush water supply system for a toilet, comprising:
- (a) a toilet stool having a plurality of supply ports;
- (b) a pipeline means for supplying flush water to said toilet stool, said pipeline means including a plurality of branched pipelines each having an end connected to a respective one of said supply ports of said toilet stool;
- (c) means for differentiating the flows of said branched pipelines from one another, wherein said differentiating means is comprised of a plurality of constant flow valves mounted one in each of said branched pipelines for obtaining a predetermined amount of discharge flow, the constant flow valves including a water passage and means for adjusting the cross-sectional area of the water passage after the water supply pressure reaches a predetermined value;
- (d) a plurality of electrically operable latching-type valves mounted one in each of said branched pipelines upstream from said constant flow valve;
- (e) a starting-of-flushing input means for accepting an input for starting the supply of flush water;
- and
- (f) a control means for driving the electrically operable latching-type valves in a preset order in response to the input for starting the supply of flush water, and for keeping said electrically operable latching-type valves in an opened position for a preset period of time.
4 more elements
Dependencies are inferred from the claim text.