Back to results
US 5,738,141 AGranted
WC-cistern filling valve
AssigneeRost, Incorporated
InventorsWillfried Blanke, Norbert Fuchs, Gerhard Pieper
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRost, Incorporated
InventorsWillfried Blanke, Norbert Fuchs, Gerhard Pieper
Estimating the term…
The present invention relates to a WC-cistern filling valve comprising a liquid inlet assigned to a supply line, a liquid outlet assigned to the cistern, and a closing element which is assigned to a valve passage opening arranged between liquid inlet and oulet and which is switchable by a float in accordance with the liquid level in the cistern for opening and closing the valve passage opening. It is the object of the present invention to provide a low-noise WC-cistern filling valve. This object is achieved in that at least a portion of the liquid outlet is shaped as a thread in the flow direction downstream of the closing element in such a manner that liquid is discharged with a swirl from the liquid outlet to the cistern in the opened state of the closing element.
A WC-cistern filling valve comprising:
A WC-cistern filling valve comprising a liquid inlet assigned to a supply line, a liquid outlet assigned to said cistern, and a closing element assigned to a valve passage opening arranged between the liquid inlet and the liquid outlet, said closing element being switchable by a float in accordance with the filling level in said cistern for opening and closing said valve passage opening, at least a portion of said liquid outlet having a flow channel shaped as a thread in the flow direction downstream of said closing element in such a manner that liquid is discharged with a swirl from said liquid outlet to said cistern in the opened state of said closing element, the liquid outlet including a filling tube, said float being arranged in said filling tube and a control rod being guided substantially coaxially through said filling tube, said screw member and a housing member being inserted into an upper end of said filling tube, the control rod extending upward through a corresponding opening in said housing member, said opening additionally serving to air and vent said filling tube.
A WC-cistern filling valve comprising a liquid inlet assigned to a supply line, a liquid outlet assigned to said cistern, and a closing element assigned to a valve passage opening arranged between the liquid inlet and the liquid outlet, said closing element being switchable by a float in accordance with the filling level in said cistern for opening and closing said valve passage opening, at least a portion of said liquid outlet having a flow channel shaped as a thread in the flow direction downstream of said closing element in such a manner that liquid is discharged with a swirl from said liquid outlet to said cistern in the opened state of said closing element, the flow channel having an entry portion and a cross-section, the cross-section being reduced at a portion located downstream of the entry portion to reduce noise development, the liquid outlet including a filling tube, said float being arranged in said filling tube and a control rod being guided substantially coaxially through said filling tube, said screw member and a housing member being inserted into an upper end of said filling tube, the control rod extending upward through a corresponding opening in said housing member, said opening additionally serving to air and vent said filling tube.
Dependencies are inferred from the claim text.