IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0977325
(2004-10-29)
|
등록번호 |
US-7544289
(2009-07-01)
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발명자
/ 주소 |
- Straka, Michael R.
- Poppe, Carl H.
- Servin, Carl M.
- Calic, Caba
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출원인 / 주소 |
- IDEX Health & Science LLC
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
67 |
초록
▼
A liquid dispensing system is provided for automated dispensing of a plurality of liquid reagents into a recreational body of water. The liquid dispensing system includes a cartridge apparatus housing a plurality of liquid reagent containers, each containing a respective liquid reagent. A docking as
A liquid dispensing system is provided for automated dispensing of a plurality of liquid reagents into a recreational body of water. The liquid dispensing system includes a cartridge apparatus housing a plurality of liquid reagent containers, each containing a respective liquid reagent. A docking assembly is provided having a dock manifold device, and is releasably coupled to the cartridge apparatus between a first condition and a second condition. In a first condition, the cartridge apparatus can be removably coupled to the docking assembly, while in the second condition, the cartridge apparatus is lockably mounted to the docking assembly in a manner permitting fluid communication from the respective reagent container to respective fluid passages of the manifold device. The dispensing system further includes a dosing engine having a valve manifold device to selectively dispense the liquid reagents into the recreational body of water through a dispensing port.
대표청구항
▼
What is claimed is: 1. A liquid dispensing system for automated dispensing of one or more liquid reagents into a recreational body of water, said system comprising: a cartridge apparatus defining a cavity, and a cartridge front wall; one or more liquid reagent containers containing a respective liq
What is claimed is: 1. A liquid dispensing system for automated dispensing of one or more liquid reagents into a recreational body of water, said system comprising: a cartridge apparatus defining a cavity, and a cartridge front wall; one or more liquid reagent containers containing a respective liquid reagent, each said reagent container being disposed in said cavity in a manner permitting access to each respective liquid reagent through the front wall; a docking assembly having a dock manifold device, and releasably coupled to the cartridge apparatus between a first condition and a second condition, removably mounting the cartridge apparatus to the docking assembly in a manner permitting fluid communication through the cartridge front wall from the respective reagent container to respective fluid passages of the manifold device; a dosing engine having a valve manifold device having one or more intake ports coupled to the respective dock manifold fluid passages, and a dispensing port to deliver the liquid reagents to the body of water, said dosing engine further including a valve assembly fluidly coupled to the valve manifold device to manipulate the flow distribution between the respective intake ports and the dispensing port for selective dispensing of the respective liquid reagents through the dispensing port and to the recreational body of water. 2. The liquid dispensing system as defined by claim 1, wherein: said dosing engine includes a pump device in fluid communication with the manifold device to pump the liquid reagents out of said dispensing port. 3. The liquid dispensing system as defined by claim 2, further including: a control system operably coupled between the switching valve and the pump device for automated control thereof. 4. The liquid dispensing system as defined by claim 2, wherein said valve manifold device includes a stator element defining one or more intake passages fluidly coupled to a corresponding reagent reservoirs and having one or more intake-ports terminating at a stator face lying in an interface plane, said stator element further defining a dispensing passage fluidly coupled to the dispensing port which terminates at the stator face, and a central passage having one portion fluidly coupled to the pump device and another portion fluidly coupled to a drive port that terminates at the stator face; and said valve assembly including a rotor element defining a rotor face oriented in the interface plane in opposed relationship to and contacting said stator face in a fluid-tight manner, said rotor element being rotatably movable about a rotational axis, relative to said stator face, for rotational movement of said rotor face to at least a discrete first aspirate and dispense position, wherein, said rotor face and said stator face cooperatively defining a channel such that: in the first aspirate position, said channel fluidly couples a selected one of the one or more intake ports and the drive port; and in the dispense position, said channel fluidly couples the dispensing port and the drive port. 5. The liquid dispensing system as defined by claim 4, further including: a fluid containment reservoir, having a discrete volume, in fluid communication with the drive port and the pump device for the containment of liquid reagent therein. 6. The liquid dispensing system as defined by claim 5, wherein in the first aspirate position, a discrete volume of liquid reagent from the one reagent reservoir can be aspirated, via the pump device, through the selected one intake port, the drive port and into the containment reservoir; and in the dispense position, the discrete volume of liquid reagent contained in the containment reservoir can be dispensed therefrom, via the pump device, through the drive port and out of the dispensing port. 7. The liquid dispensing system as defined by claim 6, wherein said stator element further defining a wash passage having one portion configured to fluidly couple to a wash reservoir containing a wash fluid, and another portion fluidly coupled to a wash port that terminates at the stator face; and said rotor element further being rotatably movable to at least a discrete wash position, wherein the channel fluidly couples said wash port and the drive port, to enable said pump device to aspirate wash fluid through the wash port, the drive port and into the containment reservoir. 8. The liquid dispensing system as defined by claim 5, wherein, said pump device includes a pump barrel defining a cavity, and containing a reciprocating piston therein, said cavity and said reciprocating piston cooperating to define a substantial portion of the fluid containment reservoir. 9. The liquid dispensing system as defined by claim 4, wherein said pump device further includes a linear stepper motor coupled to said reciprocating piston for accurate volumetric actuation thereof. 10. The liquid dispensing system as defined by claim 8, wherein said pump barrel is angled during operation thereof in a manner creating an apex portion in said cavity, said pump barrel containing an offset pump port extending into said apex portion to facilitate purging thereof. 11. The liquid dispensing system as defined by claim 1, wherein, said docking assembly includes mounting structure and one or more dock connectors in fluid communication with the manifold device, each respective reagent container includes a collared connector enabling access to the respective reagent contained therein, each said collared connector being formed for mating engagement with a respective dock connector for fluid communication therebetween, and said cartridge apparatus including: a body member defining the central cavity therein, and said front wall; one or more dividing walls separating the central cavity into at least two or more adjacent compartments, each compartment being sized and dimensioned for receipt and support of a respective reagent container therein; one or more connector supports coupled to said front wall for communication with the respective compartment, and each connector support being formed and dimensioned for sliding engagement with a respective collared connector therebetween to enable receipt and support of the respective reagent container in the respective compartment, each said connector support cooperating with the respective collared connecter to provide a predetermined amount of sliding longitudinal movement therebetween; and a mounting device coupled to the body member, and configured to cooperate with the docking assembly mounting structure for movement of the cartridge apparatus between the first condition and a second condition, wherein during movement of the cartridge apparatus from said first condition to said second condition, the respective collared connectors of the reagent containers, slideably mounted to the respective connector support, are aligned and engaged with the respective dock connector of the docking assembly for fluid-tight mating therebetween. 12. The liquid dispensing system as defined by claim 11, wherein said mounting device and said mounting structure cooperate for hinged movement of the cartridge apparatus relative the manifold device, between the first condition and the second condition, such that an engagement between the respective collared connectors of the associated reagent container and the respective dock connectors is a curvilinear motion. 13. The liquid dispensing system as defined by claim 12, wherein said mounting device includes a hinge pin, and said mounting structure includes a hinge slot formed and dimensioned for sliding receipt of said hinge pin to a locking position, releasably locking the mounting device to the mounting structure, and enabling hinged movement of the cartridge apparatus about a rotational axis of the hinge pin between the first condition and the second condition. 14. The liquid dispensing system as defined by claim 11, wherein each connector support includes a U-shaped groove extending downwardly from a lower edge portion of the front wall, and formed for sliding receipt of the respective collared connector therein. 15. The liquid dispensing system as defined by claim 14, wherein each second connector support includes a first tang and an opposed second tang extending into a respective groove thereof, the first and second tangs cooperating with the respective collar connectors to retain the collar connector in the respective groove. 16. The liquid dispensing system as defined by claim 14, wherein a respective bight portion of the U-shaped groove and the respective first and second tangs cooperate to permit sliding movement of the respective collar connector in the range of about 0.030 inches to about 0.050 inches. 17. The liquid dispensing system as defined by claim 11, wherein said one or more dividing walls each further cooperating with the body member to define one or more pocket compartments proximate to the front wall, and positioned between adjacent compartments, each pocket compartment being formed and dimensioned for receipt of a respective reagent container therein, said apparatus further including: one or more pocket connector support coupled to said front wall for communication with a respective pocket compartment, each said pocket connector support being formed and dimensioned for sliding engagement with a respective collared connector therebetween to enable receipt and support of the reagent container in the pocket compartment, said pocket connector support cooperating with the respective collared connecter to provide a predetermined amount of sliding longitudinal movement therebetween, wherein during movement of the cartridge apparatus from said first condition to said second condition, the respective collared connector of the reagent containers, slideably mounted to the pocket connector support, is aligned and engaged with the respective dock connector of the docking assembly for fluid-tight mating therebetween. 18. A liquid dispensing system for dispensing of a plurality of liquid reagents, each contained in a separate respective reagent container, and each including a collared connector, said dispensing system comprising: a docking assembly having a manifold device configured to distribute liquids therethrough, said docking assembly including mounting structure and a plurality of dock connectors in fluid communication with the manifold device; a cartridge apparatus including: a body member defining a central cavity therein, and having a front wall; a first dividing wall separating the central cavity into a first compartment and an adjacent second compartment, each of the first and second compartment being sized and dimensioned for receipt and support of a respective reagent container therein; and a first and second connector support coupled to said front wall for communication with the respective first and second compartment, and each said first and second connector support being formed and dimensioned for sliding engagement with a respective collared connector therebetween to enable receipt and support of the respective reagent container in the respective first and second compartment, said first and second connector support cooperating with the respective collared connecter to provide a predetermined amount of sliding longitudinal movement therebetween; and a mounting device coupled to the cartridge apparatus, and configured to cooperate with the docking assembly mounting structure for movement of the cartridge apparatus between a first condition and a second condition, removably mounting the cartridge apparatus to the docking assembly, wherein during movement of the cartridge apparatus from said first condition to said second condition, the respective collared connectors of the reagent containers, slideably mounted to the respective first and second connector support, are aligned and engaged with the respective dock connector of the docking assembly for fluid-tight mating therebetween. 19. The liquid dispensing system as defined by claim 18, wherein each said dock connector includes an elongated pin portion, and each said collared connector includes a receptacle formed and dimensioned for receipt of a corresponding pin portion therein when the cartridge apparatus is moved to the second condition. 20. The liquid dispensing system as defined by claim 18, wherein said docking assembly includes a base member, and said manifold device upstands therefrom. 21. The liquid dispensing system as defined by claim 20, wherein each said dock connector includes an elongated pin portion extending outwardly from said manifold device in a direction generally parallel to the base member, and each said collared connector includes a receptacle formed and dimensioned for receipt of a corresponding pin portion therein when the cartridge apparatus is moved to the second condition. 22. The liquid dispensing system as defined by claim 21, wherein said mounting device and said mounting structure cooperate for hinged movement of the cartridge apparatus relative the manifold device, between the first condition and the second condition, such that an engagement between the respective collared connectors of the associated reagent container and the respective dock connectors is a curvilinear motion. 23. The liquid dispensing system as defined by claim 22, wherein said mounting device includes a hinge pin, and said mounting structure includes a hinge slot formed and dimensioned for sliding receipt of said hinge pin to a locking position, releasably locking the mounting device to the mounting structure, and enabling hinged movement of the cartridge apparatus about a rotational axis of the hinge pin between the first condition and the second condition. 24. The liquid dispensing system as defined by claim 23, wherein said hinge pin is eccentric-shaped such that in the cartridge apparatus is oriented in the first condition, relative the docking station, the hinge pin may be released from the hinge slot. 25. The liquid dispensing system as defined by claim 23, wherein the rotational axis of the mounting device is positioned proximate a plane containing said front wall. 26. The liquid dispensing system as defined by claim 20, further including: a latch assembly cooperating between the body member and the base member, in the second condition, to releasably lock the cartridge apparatus to the docking assembly. 27. The liquid dispensing system as defined by claim 26, wherein said latch assembly includes a lever member movably mounted to an exterior wall of the body member, and a receiving slot formed and dimensioned for releasable engagement with a distal portion of the lever member when in the second condition. 28. The liquid dispensing system as defined by claim 18, wherein said first dividing wall further cooperating with the body member to define pocket compartment proximate to the front wall, and positioned between the first compartment and the second compartment, said pocket compartment being formed and dimensioned for receipt of a respective reagent container therein, said apparatus further including: a pocket connector support coupled to said front wall for communication with the pocket compartment, said pocket connector support being formed and dimensioned for sliding engagement with a respective collared connector therebetween to enable receipt and support of the reagent container in the pocket compartment, said pocket connector support cooperating with the respective collared connecter to provide a predetermined amount of sliding longitudinal movement therebetween, wherein during movement of the cartridge apparatus from said first condition to said second condition, the respective collared connector of the reagent containers, slideably mounted to the pocket connector support, is aligned and engaged with the respective dock connector of the docking assembly for fluid-tight mating therebetween. 29. A liquid dispensing system for automated dispensing of one or more liquid reagents from one or more corresponding reagent reservoirs into a recreational body of water, said system comprising: a valve manifold device having one or more intake ports, each said reagent reservoir fluidly coupled to a respective intake port, and a dispensing port in fluid communication with the recreational body of water; a valve assembly movable between a plurality of discrete positions between the intake ports and the dispensing port for selective dispensing of the liquid reagents through the dispensing port and to the recreational body of water; a docking assembly having a dock manifold device configured to distribute liquids therethrough, said dock manifold device including one or more dock connectors in fluid communication with a corresponding intake port of the valve manifold device; and a cartridge apparatus removably mounted to the docking assembly, and configured to contain the one or more liquid reagent reservoirs therein, each said liquid reagent reservoir fluidly coupled to a respective dock connector. 30. The liquid dispensing system as defined by claim 29, further including: a pump device in fluid communication with the valve manifold device to pump the liquid reagents out of said dispensing port. 31. The liquid dispensing system as defined by claim 30, further including: a control system operably coupled between the valve assembly and the pump device for automated control thereof. 32. The liquid dispensing system as defined by claim 30, wherein said valve manifold device includes a stator element defining one or more intake passages fluidly coupled to a corresponding reagent reservoir and having one or more intake-ports terminating at a stator face lying in an interface plane, said stator element further defining a dispensing passage fluidly coupled to the dispensing port which terminates at the stator face, and a central passage having one portion fluidly coupled to the pump device and another portion fluidly coupled to a drive port that terminates at the stator face; and said valve assembly including a rotor element defining a rotor face oriented in the interface plane in opposed relationship to and contacting said stator face in a fluid-tight manner, said rotor element being rotatably movable about a rotational axis, relative to said stator face, for rotational movement of said rotor face to at least a discrete first aspirate and dispense position, wherein, said rotor face and said stator face cooperatively defining a channel such that: in the first aspirate position, said channel fluidly couples a selected one of the one or more intake ports and the drive port; and in the dispense position, said channel fluidly couples the dispensing port and the drive port. 33. The liquid dispensing system as defined by claim 32, further including: a fluid containment reservoir, having a discrete volume, in fluid communication with the drive port and the pump device for the containment of liquid reagent therein. 34. The liquid dispensing system as defined by claim 33, wherein in the first aspirate position, a discrete volume of liquid reagent from the one reagent reservoir can be aspirated, via the pump device, through the first intake port, the drive port and into the containment reservoir; and in the dispense position, the discrete volume of liquid reagent contained in the containment reservoir can be dispensed therefrom, via the pump device, through the drive port and out of the dispensing port. 35. The liquid dispensing system as defined by claim 34, wherein said stator element further defining a wash passage having one portion configured to fluidly couple to a wash reservoir containing a wash fluid, and another portion fluidly coupled to a wash port that terminates at the stator face; and said rotor element further being rotatably movable to at least a discrete wash position, wherein the channel fluidly couples said wash port and the drive port, to enable said pump device to aspirate wash fluid through the wash port, the drive port and into the containment reservoir. 36. The liquid dispensing system as defined by claim 33, wherein, said pump device includes a pump barrel defining a cavity, and containing a reciprocating piston therein, said cavity and said reciprocating piston cooperating to define a substantial portion of the fluid containment reservoir. 37. The liquid dispensing system as defined by claim 36, wherein said pump device further includes a linear stepper motor coupled to said reciprocating piston for accurate volumetric actuation thereof. 38. The liquid dispensing system as defined by claim 36, wherein said pump barrel is angled during operation thereof in a manner creating an apex portion in said cavity, said pump barrel containing an offset pump port extending into said apex portion to facilitate purging thereof. 39. The liquid dispensing system as defined by claim 29, wherein: said docking assembly including mounting structure; and each respective reagent reservoir including a collared connector enabling access to the respective reagent contained therein, said cartridge apparatus including: a body member defining a central cavity therein, and having a front wall; a plurality of connector supports each coupled to said front wall for communication with the central cavity, and each connector support being formed and dimensioned for sliding engagement with a respective collared connector therebetween to enable receipt and support of the respective reagent reservoir in the central cavity, each said connector support cooperating with the respective collared connecter to provide a predetermined amount of sliding longitudinal movement therebetween; and a mounting device coupled to the cartridge apparatus, and configured to cooperate with the docking assembly mounting structure for movement of the cartridge apparatus between a first condition and a second condition, removably mounting the cartridge apparatus to the docking assembly, wherein during movement of the cartridge apparatus from said first condition to said second condition, the respective collared connectors of the reagent reservoirs, slideably mounted to the respective connector support, are aligned and engaged with the respective dock connector of the docking assembly for fluid-tight mating therebetween. 40. The liquid dispensing system as defined by claim 39, wherein said mounting device and said mounting structure cooperate for hinged movement of the cartridge apparatus relative the manifold device, between the first condition and the second condition, such that an engagement between the respective collared connectors of the associated reagent reservoir and the respective dock connectors is a curvilinear motion. 41. A liquid dispensing system for automated dispensing of one or more liquid reagents from one or more corresponding reagent reservoirs into a recreational body of water, said system comprising: a pump device; a valve manifold device having a stator face and including one or more intake passages in fluid communication with the one or more corresponding reagent reservoirs, each intake passage having one end of which terminates at one or more corresponding intake ports at the stator face, said manifold device further including a dispensing passage in fluid communication with the recreational body of water, one end of said dispensing passage terminating at a dispensing port at the stator face, and a central passage in fluid communication with the pump device, one end of said central passage terminating at a drive port at the stator face; and a valve assembly including a rotor element defining a rotor face oriented in opposed relationship to and contacting said stator face in a fluid-tight manner at a rotor/stator interface, said rotor element being rotatably movable about a rotational axis, relative to said stator face, for rotational movement of said rotor face to at least a discrete first aspirate position and a dispense position, wherein, said rotor face and said stator face cooperatively defining a channel such that: in the first aspirate position, said channel fluidly couples a selected one of the one or more intake ports and the drive port, such that said pump device can selectively aspirate liquid reagent into the central passage, and in the dispense position, said channel fluidly couples the dispensing port and the drive port, such that said pump device can selectively dispense the aspirated liquid reagent through the dispensing port and into recreation body of water. 42. The liquid dispensing system as defined by claim 41, further including: a control system operably coupled between the switching valve and the pump device for automated control thereof. 43. The liquid dispensing system as defined by claim 41, further including: a fluid containment reservoir, having a discrete volume, in fluid communication with the drive port and the pump device for the containment of liquid reagent therein. 44. The liquid dispensing system as defined by claim 43, wherein in the first aspirate position, a discrete volume of liquid reagent from the one reagent reservoir can be aspirated, via the pump device, through the-selected one intake port, the drive port and into the containment reservoir; and in the dispense position, the discrete volume of liquid reagent contained in the containment reservoir can be dispensed therefrom, via the pump device, through the drive port and out of the dispensing port. 45. The liquid dispensing system as defined by claim 44, wherein said manifold device further defining a wash passage having one portion configured to fluidly couple to a wash reservoir containing a wash fluid, and another portion fluidly coupled to a wash port that terminates at the stator face; and said rotor element further being rotatably movable to at least a discrete wash position, wherein the channel fluidly couples said wash port and the drive port, to enable said pump device to aspirate wash fluid through the wash port, the drive port and into the containment reservoir. 46. The liquid dispensing system as defined by claim 43, wherein, said pump device includes a pump barrel defining a cavity, and containing a reciprocating piston therein, said cavity and said reciprocating piston cooperating to define a substantial portion of the fluid containment reservoir. 47. The liquid dispensing system as defined by claim 46, wherein said pump barrel is angled during operation thereof in a manner creating an apex portion in said cavity, said pump barrel containing an offset pump port extending into said apex portion to facilitate purging thereof. 48. A liquid dispensing system for automated dispensing of one or more liquid reagents from one or more corresponding reagent reservoirs into a recreational body of water, said system comprising: a valve manifold device having one or more intake ports, each of the one or more reagent reservoir fluidly coupled to a respective intake port, said manifold device further including a dispensing port in fluid communication with the recreational body of water; a valve assembly movable between a plurality of discrete positions between one or more intake ports and the dispensing port for selective dispensing of the liquid reagents through the dispensing port and to the recreational body of water; a docking assembly having a dock manifold device configured to distribute liquids therethrough, said docking assembly including mounting structure and one or more of dock connectors in fluid communication with the manifold device; and a cartridge apparatus configured to contain the one or more liquid reagent reservoirs therein, each respective reagent reservoir including a collared connector enabling access to the respective reagent contained therein, said cartridge apparatus including: a body member defining a central cavity therein, and having a front wall; one or more connector supports each coupled to said front wall for communication with the central cavity, and each connector support being formed and dimensioned for sliding engagement with a respective collared connector therebetween to enable receipt and support of the respective reagent reservoir in the central cavity, each said connector support cooperating with the respective collared connecter to provide a predetermined amount of sliding longitudinal movement therebetween; and a mounting device coupled to the cartridge apparatus, and configured to cooperate with the docking assembly mounting structure for movement of the cartridge apparatus between a first condition and a second condition, removably mounting the cartridge apparatus to the docking assembly, wherein during movement of the cartridge apparatus from said first condition to said second condition, the respective collared connectors of the reagent reservoirs, slideably mounted to the respective connector support, are aligned and engaged with the respective dock connector of the docking assembly for fluid-tight mating therebetween. 49. The liquid dispensing system as defined by claim 48, wherein said mounting device and said mounting structure cooperate for hinged movement of the cartridge apparatus relative the manifold device, between the first condition and the second condition, such that an engagement between the respective collared connectors of the associated reagent reservoir and the respective dock connectors is a curvilinear motion. 50. The liquid dispensing system as defined by claim 48, further including: a pump device in fluid communication with the manifold device to pump the liquid reagents out of said dispensing port. 51. The liquid dispensing system as defined by claim 50, further including: a control system operably coupled between the switching valve and the pump device for automated control thereof. 52. The liquid dispensing system as defined by claim 50, wherein said valve manifold device includes a stator element having a stator face and including one or more intake passages in fluid communication with the one or more corresponding reagent reservoirs, each intake passage having one end of which terminates at one or more corresponding intake ports at the stator face, said manifold device further including a dispensing passage in fluid communication with the recreational body of water, one end of said dispensing passage terminating at a dispensing port at the stator face, and a central passage in fluid communication with the pump device, one end of said central passage terminating at a drive port at the stator face; and said valve assembly including a rotor element defining a rotor face oriented in opposed relationship to and contacting said stator face in a fluid-tight manner at a rotor/stator interface, said rotor element being rotatably movable about a rotational axis, relative to said stator face, for rotational movement of said rotor face to at least a discrete first aspirate position and a dispense position, wherein, said rotor face and said stator face cooperatively defining a channel such that: in the first aspirate position, said channel fluidly couples said selected one intake port and the drive port; and in the dispense position, said channel fluidly couples the dispensing port and the drive port. 53. The liquid dispensing system as defined by claim 52, further including: a fluid containment reservoir, having a discrete volume, in fluid communication with the drive port and the pump device for the containment of liquid reagent therein. 54. The liquid dispensing system as defined by claim 53, wherein in the first aspirate position, a discrete volume of liquid reagent from the one reagent reservoir can be aspirated, via the pump device, through the selected one intake port, the drive port and into the containment reservoir; and in the dispense position, the discrete volume of liquid reagent contained in the containment reservoir can be dispensed therefrom, via the pump device, through the drive port and out of the dispensing port. 55. The liquid dispensing system as defined by claim 54, wherein said stator element further defining a wash passage having one portion configured to fluidly couple to a wash reservoir containing a wash fluid, and another portion fluidly coupled to a wash port that terminates at the stator face; and said rotor element further being rotatably movable to at least a discrete wash position, wherein the channel fluidly couples said wash port and the drive port, to enable said pump device to aspirate wash fluid through the wash port, the drive port and into the containment reservoir. 56. The liquid dispensing system as defined by claim 53, wherein, said pump device includes a pump barrel defining a cavity, and containing a reciprocating piston therein, said cavity and said reciprocating piston cooperating to define a substantial portion of the fluid containment reservoir. 57. The liquid dispensing system as defined by claim 56, wherein said pump device further includes a linear stepper motor coupled to said reciprocating piston for accurate volumetric actuation thereof. 58. The liquid dispensing system as defined by claim 56, wherein said pump barrel is angled during operation thereof in a manner creating an apex portion in said cavity, said pump barrel containing an offset pump port extending into said apex portion to facilitate purging thereof. 59. The liquid dispensing system as defined by claim 52, wherein said central passage is disposed at the rotational axis.
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