Patent ID: 6427870
Filing Date: 2002-08-06
Classification: B01F,B05B

Abstract:
A device for dispensing a product, comprising:a first chamber configured to initially contain at least one of a first composition and a mixture of the first composition and second composition; a second chamber configured to contain the second composition; a flow passage configured to provide a flow of the second composition from the second chamber to the first chamber; an actuator configured to be actuated to cause an amount of a product to be dispensed from the first chamber, the product including at least one of the first composition, the second composition, and the mixture of the first composition and the second composition; and a selective air intake mechanism configured to selectively be placed in an open position to place the first chamber in flow communication with air outside the first chamber and in a closed position to prevent flow communication, via the air intake mechanism, between the first chamber and air outside the first chamber, wherein the device is configured such that when the air intake mechanism is in the open position, the amount of second composition in the second chamber remains substantially constant in response to dispensing an amount of the product from the first chamber, and when the air intake mechanism is in the closed position, an amount of the second composition flows from the second chamber to the first chamber via the flow passage in response to dispensing an amount of the product from the first chamber.