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US 4,051,727 AGranted
Liquid mixture indicator for rug shampoo apparatus
AssigneeAktiebolaget Electrolux
InventorsOsten Schwartz, Milos Vukotic
Life of this patent
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Abstract
An indicator mounted on a receptacle for determining the proportion of the liquid mixture components in the receptacle of a liquid dispensing apparatus, such as a rug or carpet shampoo device. Even if the receptacle is partly filled with a liquid mixture, the present indicator shows the correct amount to be added to each of the components to thereby fill the receptacle to a given level.
Claims7
A liquid mixture indicator for a liquid dispensing apparatus in which the correct proportions of the components in a receptacle are continuously determined comprising:
- a float on the liquid surface in said receptacle, a movable indicator dial rotatably mounted on the receptacle and operatively connected to said float, said indicator dial at any given time showing through a wall of the receptacle the quantity of each component to be added to obtain the correct proportions of said liquid mixture, an operator member engaging said indicator dial before filling of said receptacle to thereby block the movement of said indicator dial whereby accurate proportions of the components to be added may be determined through said wall, and means for releasing said operator member from engagement with said indicator dial after the receptacle has been filled to a given level.
Dependencies are inferred from the claim text.