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US 6,386,394 B1Granted
Liquid dispenser to dispense a predefined amount of liquid
OwnerKlaus M. A. Vollrath, Jurgen K Vollrathinventors
Life of this patent
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Abstract
A liquid dispenser comprises a container for supporting liquid, and has a dispensing end with an opening. A reservoir is located in the container and is connected to the opening, and a structure is provided for channeling liquid into the reservoir. Liquid is propelled from the dispenser by squeezing resiliently depressable portions of the dispenser. The reservoir may take the form of a bowl-like structure or may retain liquid by cohesive and adhesive forces. The dispenser may also include a nozzle and a rest for resting the dispenser against a suitable surface when squeezing the dispenser.
Claims12
A dispenser comprising,
- a container defining a liquid supporting chamber, and having a dispensing end defining a dispensing opening,
- a liquid retainer located in the container,
- means for increasing the internal pressure of the container,
- the liquid retainer has a liquid receiving opening located above the highest level of the liquid in the container when the dispenser is in its operative orientation,
- the liquid retainer supports a predefined amount of the liquid against the force of gravity by only adhesive and cohesive forces when the dispenser is in its operative orientation, and
- a channel extending from the liquid retainer to the dispensing opening for channeling the predefined amount of liquid in the liquid retainer to the dispensing opening when the internal pressure of the container is increased.
3 more elements
Dependencies are inferred from the claim text.