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US 4,696,414 AGranted
Discharge assembly
OwnerMok K. Huatinventor
Life of this patent
Estimating the term…
Abstract
A dispensing valve provided in a chemical dispenser for dispensing predetermined amounts of chemical into a lavatory cistern is disclosed. The dispensing valve seals an opening in and dispenses liquid from the dispenser, the valve having a chamber movable through the opening between a filling position in which the chamber is fillable with chemical from the dispenser and a discharge position in which chemical held in the chamber may be discharged, the chamber being provided with surfaces sealing the opening in both said positions and further having an adjustable filling volume.
Claims12
A dispensing valve for a container comprising:
- a valve seat having means defining a first opening therein, a chamber having means defining a second opening therein, the chamber being movable relative to the valve seat between a filling position in which the chamber is fillable with liquid from the container through the second opening and a discharge position in which liquid in the chamber may be discharged through the second opening:
- first and second sealing surfaces between which the chamber is disposed, said surfaces sealing the first opening in said filling and discharge position respectively;
- a groove connected to and extending from the second opening, the groove reducing in cross sectional area away from the second opening and being arranged so that air may pass through the groove and second opening during movement of the chamber from the discharging to the filling position;
- a member movable in the chamber so as to adjust the volume thereof;
- and wherein the distance between the sealing surfaces remains constant independent of the volume of the chamber.
2 more elements
Dependencies are inferred from the claim text.