Multi-chemical dispensing system
AssigneeDema Engineering Company
InventorsPaul E. Naslund, James Schuleter
Life of this patent
Estimating the term…
Abstract
An apparatus for selective eductive dispensing of multiple chemical fluids from separate fluid containers includes a motive fluid inlet; an eductor in fluid communication with said motive fluid inlet; a selector switch defining at least one inlet and an outlet therein, said inlet and outlet in fluid communication with one another and said outlet in fluid communication with said eductor and wherein said selector switch inlet is in selective fluid communication with said fluid containers depending on the position of the selector switch; and a valve located between said motive fluid inlet and said eductor, said valve selectively opened and closed by movement of said selector switch.
Claims23
An apparatus for selective eductive dispensing of multiple chemical fluids from separate fluid containers, comprising:
- a motive fluid inlet;
- an eductor in fluid communication with said motive fluid inlet;
- a selector switch defining at least one inlet and an outlet therein, said inlet and outlet in fluid communication with one another and said outlet in fluid communication with said eductor and wherein said selector switch inlet is in selective fluid communication with said fluid containers depending on the position of the selector switch;
- and
- a valve located between said motive fluid inlet and said eductor, said valve operatively connected with said selector switch and selectively opened and closed by movement of said selector switch.
An apparatus for selective eductive dispensing of multiple chemical fluids from separate fluid containers, comprising:
- a motive fluid inlet;
- an eductor in fluid communication with said motive fluid inlet;
- a selector switch defining at least one inlet and an outlet therein, said inlet and outlet in fluid communication with one another and said outlet in fluid communication with said eductor, said inlet in selective fluid communication with said fluid containers;
- and
- said selector switch having a pressure sensitive valve located between said eductor and said outlet in said selector switch, said pressure sensitive valve disrupting fluid communication between said eductor and said selector switch outlet when the pressure on the eductor side of the pressure sensitive valve rises above that on the selector switch side of said valve.
An apparatus for selective eductive dispensing of multiple chemical fluids from separate fluid containers, comprising:
- a housing, said housing defining an access opening;
- a motive fluid inlet;
- a single eductor in fluid communication with said motive fluid inlet, wherein said single eductor is located proximate said access opening;
- a selector switch defining at least one inlet and an outlet therein, said inlet and outlet in fluid communication with one another and said outlet in fluid communication with said single eductor and said inlet in selective fluid communication with said fluid containers;
- a valve located between said motive fluid inlet and said eductor, said valve selectively opened and closed by movement of said selector switch;
- and
- wherein flow of each of said multiple chemical fluids passes through said single eductor regardless of which chemical is selected and said single eductor is removable from said apparatus through said access opening.
Dependencies are inferred from the claim text.