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US 4,309,119 AGranted
Applicator device for cosmetic preparations
AssigneeGoldwell GmbH Chemische Fabrik H.E. Dotter
InventorAdam Wittersheim
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AssigneeGoldwell GmbH Chemische Fabrik H.E. Dotter
InventorAdam Wittersheim
Estimating the term…
Applicator device for cosmetic preparations, having a closed, substantially cylindrical casing in which a piston dividing the casing into two variable-size chambers sealed from one another is displaceably disposed, the one variable-size chamber being fillable with the cosmetic preparation and being combined with a removable applicator provided with a passage for the preparation, by means of which the cosmetic preparation can be applied to the body part being treated, in quantities controllable by means of a self-closing valve. The variable-size chamber opposite the preparation reservoir is provided with a connection for bringing in a compressed gas which seeks to displace the piston to reduce the preparation reservoir, and in the passage connecting the preparation reservoir chamber to the applicator there is disposed the self-closing valve preventing escape of the preparation when the applicator is removed. In the cylindrical casing there is a plunger extending into the preparation reservoir chamber and engaging directly or indirectly the valve body of the self-closing valve, which passes through the piston in a displaceable and sealed manner and is coupled in its end area remote from the self-closing valve with a venting valve for the variable-size compressed gas chamber lying opposite the preparation reservoir chamber such that the maximum opening movement transmitted by the valve body to the plunger upon the opening of the self-closing valve opens the venting valve.
Applicator device for cosmetic preparations, having a closed, substantially cylindrical casing, a piston dividing said casing into two variable-size chambers sealed from one another, being displaceably disposed in said casing, one of said variable-size chambers forming a reservoir chamber fillable with a cosmetic preparation and being combined with a removable applicator provided with a passage for the preparation, by means of which applicator the cosmetic preparation can be applied to a body part to be treated in quantities controllable by means of a self-closing valve, the other of said variable-size chambers being located opposite said preparation reservoir chamber and being provided with a connection for admitting compressed gas for displacing the piston to reduce the size of the preparation reservoir chamber, said self-closing valve being disposed in said passage for preventing escape of the preparation when the applicator is removed and having a body, a plunger in said casing extending into said preparation reservoir chamber and engaging directly or indirectly said valve body of said self-closing valve, said plunger passing through said piston in a displaceable and sealed manner and being coupled in its end area remote from said self-closing valve with a venting valve for said other variable-size chamber such that maximum opening movement transmitted by said valve body to said plunger upon opening of said self-closing valve opens said venting valve.
Dependencies are inferred from the claim text.