Device and method for mixing and dispensing two flowable materials
AssigneeLiquid Control Corporation
InventorsMalcolm C. Larsen, Craig W. Decker
Life of this patent
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Abstract
A device for mixing and dispensing a pair of flowable materials includes a housing containing a pair of control valves for controlling the flow of the two materials into a mixer tube mounted on an outlet end of the housing. The mixer tube contains a mixing element within the bore of the tube. A control device such as a pneumatic piston, moves a shaft which is connected to the mixing element, to move the mixing element linearly axially within the tube to prevent the leakage of materials from within the tube after the control valves on the housing are moved to a closed position. An air motor may be connected to the shaft for rotating the mixing element within the tube to enhance the mixing of the materials moving therethrough.
Claims27
A device for mixing and dispensing at least two flowable materials including:
- a housing having a pair of chambers, each having an inlet and an outlet for admitting and discharging a respective one of the flowable materials into and out of a respective one of said chambers;
- a mixer tube formed with a hollow internal bore extending therethrough having inlet and outlet ends;
- said inlet end communicating with the outlets of the housing chambers for admitting the flowable materials into said tube;
- a mixing element mounted within the bore of the mixer tube to mix said flowable materials as they move through said bore;
- and
- control means for moving said mixing element and mixer tube axially with respect to each other to stop the flow of materials from the outlet end of said tube.
A method of mixing and dispensing a pair of flowable materials from a device having a pair of material inlets and a pair of material outlets communicating with a mixer tube having an inlet end and an outlet end and containing a mixing element, said method includes the steps of:
- A) moving a pair of valves to an open position to permit the flow of materials into the mixer tube and through the mixing element for discharge through the outlet end of said tube;
- B) moving the pair of valves to a closed position to block the flow of material into the mixer tube;
- and
- C) moving the mixing element and mixer tube axially with respect to each other to prevent the leakage of materials from the outlet end of the mixer tube.
A combination mixer tube and mixing element to be mounted on a discharge nozzle of a dispensing device for mixing and dispensing a pair of liquid materials, said combination including:
- the mixer tube being formed with a hollow interior bore extending therethrough having inlet and outlet ends;
- the mixing element being axially slidably mounted within the bore of the mixer tube and having a sealing member formed on an outlet end of said mixing element matching a surface on the outlet end of said mixer tube to provide a liquid sealing engagement therewith when axially moved into engagement therewith.
Dependencies are inferred from the claim text.