A delivery head for a beverage preparation machine including a movable first part and a fixed second part, the first part being movable relative to the second part between an open position and a closed position, in the open position the first part being positioned to enable loading of a cartridge in
A delivery head for a beverage preparation machine including a movable first part and a fixed second part, the first part being movable relative to the second part between an open position and a closed position, in the open position the first part being positioned to enable loading of a cartridge into the delivery head, in the closed position the first part and second part being positioned to hold the cartridge in a dispensing position, the delivery head further comprising an inlet piercer and an outlet piercer, the inlet piercer and the outlet piercer being orientated substantially in the same direction and being pivotable relative to the fixed second part between a retracted position and a piercing position.
대표청구항▼
1. A delivery head for a beverage preparation machine comprising a movable first part and a fixed second part, the first part being movable relative to the second part between an open position and a closed position,in the open position the first part being positioned to enable loading of a cartridge
1. A delivery head for a beverage preparation machine comprising a movable first part and a fixed second part, the first part being movable relative to the second part between an open position and a closed position,in the open position the first part being positioned to enable loading of a cartridge into the delivery head,in the closed position the first part and second part being positioned to hold said cartridge in a dispensing position,the delivery head further comprising a piercer body and an inlet piercer and an outlet piercer mounted to the piercer body,the inlet piercer and the outlet piercer being orientated in the same direction on the piercer body and the piercer body having the inlet and outlet piercers thereon is pivotally attached to the fixed second part so as to pivot the inlet and outlet piercers between a retracted position and a piercing position relative to the fixed second part. 2. The delivery head of claim 1 wherein the inlet piercer and the outlet piercer are orientated vertically upwards in the piercing position. 3. The delivery head of claim 1 wherein the retracted position of the inlet piercer and the outlet piercer is lower than the piercing position. 4. The delivery head of claim 1 wherein the retracted position of the inlet piercer and the outlet piercer is angled at between 5 and 10 degrees from the piercing position. 5. The delivery head of claim 1 wherein the retracted position of the inlet piercer and the outlet piercer is angled at greater than 7.5 degrees from the piercing position. 6. The delivery head of claim 1 wherein the fixed second part comprises a horizontal support for said cartridge and the inlet piercer and the outlet piercer extend vertically above the horizontal support in the piercing position, but do not extend vertically above the horizontal support in the retracted position. 7. The delivery head of claim 1 wherein a piercer mechanism is arranged to convert rotary motion of a motor of the piercer mechanism into pivoting motion of the piercer body and the inlet piercer and the outlet piercer thereon. 8. The delivery head of claim 7 further comprising an ejection passage configured to receive said cartridge wherein the ejection passage is located intermediate the inlet and outlet piercers and the motor. 9. The delivery head of claim 7 wherein the piercer mechanism comprises a primary link, the primary link comprising a first end and a second end, wherein the first end of the primary link is coupled to the motor such that rotation of the motor causes longitudinal movement of the primary link. 10. The delivery head of claim 9 wherein the piercer mechanism further comprises a secondary link, the secondary link comprising a first end and a second end, wherein the first end of the secondary link is coupled to the second end of the primary link wherein movement of the primary link causes the secondary link to rotate relative to the fixed second part. 11. The delivery head of claim 10 wherein the piercer mechanism further comprises a tertiary link, the tertiary link comprising a first end and a second end, wherein the first end of the tertiary link is coupled to the first end of the secondary link wherein movement of the secondary link causes the tertiary link to rotate relative to the fixed second part. 12. The delivery head of claim 9 wherein the piercing mechanism comprises an aperture through which an ejection passage passes. 13. The delivery head of claim 10 further comprising a quaternary link, the quaternary link being rotatably coupled to the fixed second part, wherein the second end of the secondary link is rotatably coupled to the quaternary link. 14. The delivery head of claim 1 wherein the piercer body includes a fluid inlet and a transfer conduit communicating between the fluid inlet and the inlet piercer. 15. A delivery head for a beverage preparation machine comprising a movable first part and a fixed second part, the first part being movable relative to the second part between an open position and a closed position,in the open position the first part being positioned to enable loading of a cartridge into the delivery head,in the closed position the first part and second part being positioned to hold said cartridge in a dispensing position,the delivery head further comprising an inlet piercer and an outlet piercer,the inlet piercer and the outlet piercer being orientated in the same direction and the inlet and outlet piercers being pivotally attached to the fixed second part so as to pivot between a retracted position and a piercing position relative to the fixed second part, anda linkage mechanism connected to the inlet and outlet piercers and mounted to the fixed second part with the linkage mechanism being configured to pivot the inlet and outlet piercers between the retracted position and the piercing position relative to the fixed second part. 16. The delivery head of claim 15 wherein the inlet piercer and the outlet piercer are orientated vertically upwards in the piercing position. 17. The delivery head of claim 15 wherein the retracted position of the inlet piercer and the outlet piercer is lower than the piercing position. 18. The delivery head of claim 15 wherein the retracted position of the inlet piercer and the outlet piercer is angled at between 5 and 10 degrees from the piercing position. 19. The delivery head of claim 15 wherein the retracted position of the inlet piercer and the outlet piercer is angled at greater than 7.5 degrees from the piercing position. 20. The delivery head of claim 15 wherein the fixed second part comprises a horizontal support for said cartridge and the inlet piercer and the outlet piercer extend vertically above the horizontal support in the piercing position, but do not extend vertically above the horizontal support in the retracted position. 21. The delivery head of claim 15 wherein further comprising a motor and the linkage mechanism is arranged to convert rotary motion of the motor into pivoting motion of the inlet piercer and the outlet piercer. 22. The delivery head of claim 21 further comprising an ejection passage configured to receive said cartridge wherein the ejection passage is located intermediate the inlet and outlet piercers and the motor. 23. The delivery head of claim 21 wherein the linkage mechanism comprises a primary link, the primary link comprising a first end and a second end, wherein the first end of the primary link is coupled to the motor such that rotation of the motor causes longitudinal movement of the primary link. 24. The delivery head of claim 23 wherein the linkage mechanism further comprises a secondary link, the secondary link comprising a first end and a second end, wherein the first end of the secondary link is coupled to the second end of the primary link wherein movement of the primary link causes the secondary link to rotate relative to the fixed second part. 25. The delivery head of claim 24 wherein the linkage mechanism further comprises a tertiary link, the tertiary link comprising a first end and a second end, wherein the first end of the tertiary link is coupled to the first end of the secondary link wherein movement of the secondary link causes the tertiary link to rotate relative to the fixed second part. 26. The delivery head of claim 25 further comprising a quaternary link, the quaternary link being rotatably coupled to the fixed second part, wherein the second end of the secondary link is rotatably coupled to the quaternary link. 27. The delivery head of claim 15 further comprising an ejection passage configured to receive said cartridge and the linkage mechanism comprises an aperture through which the ejection passage extends. 28. The delivery head of claim 15 further comprising a piercing body having the inlet and outlet piercers mounted thereon and being pivotally mounted to the fixed second part, the piercing body being connected to the linkage mechanism for being pivoted relative to the second part and moving the inlet and outlet piercers between the retracted and piercing positions. 29. The delivery head of claim 15 wherein the linkage mechanism includes a toggle clamp having a locked configuration that maintains the inlet and outlet piercers in the piercing position thereof and an unlocked configuration that permits the inlet and outlet piercers to pivot to the retracted position thereof. 30. The delivery head of claim 29 wherein the toggle clamp includes pivotally connected links and the links have a first orientation with the toggle clamp in the locked configuration and a different, second orientation with the toggle clamp in the unlocked configuration.
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