Plural chambered squeeze tube

Claim 2

A plural chambered, hand squeezable, dispensing tube suitable to be produced in commercial quantities and functioning effectively under tolerances permissible in such commercial production, said dispensing tube comprising: 1. an elongated, flexible walled, squeeze tube means defining first and second chambers for storing first and second fluids, respectively, said first chamber having a generally cylindrical configuration; 2. first and second fluids stored in said first and second chambers, respectively; 3. a generally circular cylindrical first and second fluid interface of polymeric foam positioned within and movable along the axis of said first chamber, said interface having an outside diameter greater than the maximum diameter of the generally circular cylindrical first chamber and being compressed when positioned within said first chamber to form a sliding seal of zero clearance with the walls of the first chamber which automatically assumes the cross-sectional size and shape of the generally cylindrical first chamber to maintain said zero clearance as the interface moves along the axis thereof; 4. selectively operable outlet means for fluidly coupling to one, both or neither of said first and second chambers; and, 5. selectively operable means for varying the ratio of the fluid couplings between said outlet means and said first and second chambers whereby the ratios of the dispensed first and second fluids can be varied.

Claim 3

A plural chambered, hand squeezable, dispensing tube suitable to be produced in commercial quantities and functioning effectively under tolerances permissible in such commercial production, said dispensing tube comprising: 1. an elongated, flexible walled, squeeze tube means defining first and second chambers for storing first and second fluids, respectively, said first chamber having a generally circular cylindrical configuration; 2. first and second fluids stored in said first and second chambers, respectively; 3. a generally circular cylindrical first and second fluid interface of low density polyethylene foam positioned within and movable along the axis of said first chamber, said interface having an outside diameter greater than the maximum diameter of the generally circular cylindrical first chamber and being compressed when positioned within said first chamber to form a sliding seal of zero clearance with the walls of the first chamber which automatically assumes the cross-sectional size and shape of the generally cylindrical first chamber to maintain said zero clearance as the interface moves along the axis thereof; 4. selectively operable outlet means for fluidly coupling to one, both or neither of said first and second chambers; and, 5. selectively operable means for varying the ratio of the fluid couplings between said outlet means and said first and second chambers whereby the ratios of the dispensed first and second fluids can be varied.

Claim 4

A plural chambered, hand squeezable, dispensing tube suitable to be produced in commercial quantities and functioning effectively under tolerances permissible in such commercial production, said dispensing tube comprising: 1. an elongated, flexible walled, squeeze tube means defining first and second chambers for storing first and second fluids, respectively, said first chamber having a generally circular cylindrical configuration; 2. first and second fluids stored in said first and second chambers, respectively; 3. a generally circular cylindrical first and second fluid interface of low density polyethylene foam positioned within and movable along the axis of said first chamber, said interface having an outside diameter greater than the maximum diameter of the generally circular cylindrical first chamber and being compressed when positioned within said first chamber to form a sliding seal of zero clearance with the walls of the first chamber which automatically assumes the cross-sectional size and shape of the generally cylindrical first chamber to maintain said zero clearance as the interface moves along the axis thereof; 4. selectively operable outlet means for fluidly coupling to one, both or neither of said first and second chambers; and, 5. selectively operable means for varying the ratio of the fluid couplings between said outlet means and said first and second chambers whereby the ratios of the dispensed first and second fluids can be varied.

Claim 5

The apparatus of claim 2 wherein said first and second fluid interface is a closed cell, low density polyethylene foam and wherein the sliding seal formed by said first and second interface comprises a plurality of said foam cells that are in open, fluid communication with the walls of the first chamber and are not in fluid communication with each other.