IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0474302
(2002-04-08)
|
우선권정보 |
ZA-01/2896 (2001-04-09) |
국제출원번호 |
PCT//IB02/01102
(2003-10-07)
|
§371/§102 date |
20031007
(20031007)
|
국제공개번호 |
WO02//081954
(2002-10-17)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
1 |
초록
▼
The invention discloses a tap (10) for controlling liquid flow. The tap (10) has a tube (14) with first (16) and second (18) opposite open ends, an inlet opening (20) leading into the tube between the first and second open ends, and an outlet opening (16) defined by the first open end (16), which ou
The invention discloses a tap (10) for controlling liquid flow. The tap (10) has a tube (14) with first (16) and second (18) opposite open ends, an inlet opening (20) leading into the tube between the first and second open ends, and an outlet opening (16) defined by the first open end (16), which outlet opening (16) serves as an outlet from the tube (14). The tap (10) further includes a first valve seat (36), formed between the inlet opening (20) and the outlet opening (16), and a second valve seat (38), formed between the inlet opening (20) and the second open end (18). A closure member (42) is sealingly slidably movable in the tube (14) and is provided with a first circumferential sealing edge (60), the first sealing edge (60) being adapted to removably abut against the first valve seat (36). The closure member (42) is further provided with a second circumferential sealing edge (66), the second sealing edge (66) being adapted to removably abut against the second valve seat (38).
대표청구항
▼
1. A tap (10) for controlling liquid flow having a tube (14) with first (16) and second (18) opposite open ends, an inlet opening (20) leading into the tube between the first and second open ends, an outlet opening (16) defined by the first open end (16), which outlet opening (16) serves as an outle
1. A tap (10) for controlling liquid flow having a tube (14) with first (16) and second (18) opposite open ends, an inlet opening (20) leading into the tube between the first and second open ends, an outlet opening (16) defined by the first open end (16), which outlet opening (16) serves as an outlet from the tube (14), the tap (10) being characterized thereby that it is adapted for use in bag-in-box containers containing consumable liquids and that it includes a first valve seat (36) formed between the inlet opening (20) and the outlet opening (16); a second valve seat (38) formed between the inlet opening (20) and the second open end (18); a closure member (42) sealingly slidably movable in the tube (14); a first circumferential sealing edge (60) provided on and integrally formed with the closure member (42), the first sealing edge (60) being adapted to removably abut against the first valve seat (36); and a second circumferential sealing edge (66) provided on and integrally formed with the closure member (42), the second sealing edge (66) being adapted to removably abut against the second valve seat (38).2. A tap as claimed in claim 1, characterized thereby that the closure member (42) is displaceable internally along the tube (14) to cause the first sealing edge (60) to move across the inlet opening (20) from between a first or closed position, in which the first sealing edge (60) of the closure member (42) cooperates with the first valve seat (36) to close off the inlet opening (20) from the outlet opening (16) and the second sealing edge (66) cooperates with the second valve seat (38), into a second or open position in which the first (60) and second (66) sealing edges are spaced away from the first (36) and second (38) valve seats to permit liquid flow through the inlet opening (20) into the tube (14) and out through the outlet opening (16), and for closure of the outlet opening (16) the reverse procedure taking place to cause the closure member (42) to be moved back into the first or closed position.3. A tap as claimed in claim 1, characterized thereby that the first valve seat (36) and the first sealing edge (60) are adapted to deflect the closure member (42) outwardly against the tube (14), when the closure member (42) is in the closed position.4. A tap as claimed in claim 1, characterized thereby that the first (36) and second (38) valve seats are convexly curved.5. A tap as claimed in claim 1, characterized thereby that the first valve seat (36) is provided with a convexly curved circumferential protuberance (64) extending approximately half-way across the first valve seat (36).6. A tap as claimed in claim 5, characterized thereby that the protuberance (64) is spaced away from an inner wall (30) of the tube (14).7. A tap as claimed in claim 1, characterized thereby that the first (60) and second (66) sealing edges are convexly curved.8. A tap as claimed in claim 1, characterized thereby that the first sealing edge (60) is provided with a convexly curved circumferential protuberance (62) extending approximately half-way across the first sealing edge (60).9. A tap as claimed in claim 8, characterized thereby that the protuberance (62) is located near to an outer wall (52) of the closure member (42).10. A tap as claimed in claim 1, characterized thereby that the first (60) and second (66) sealing edges are adapted to have a small contact area with the first (36) and second (38) valve seats respectively.11. A tap as claimed in claim 1, characterized thereby that the closure member (42) and the tube (14) are both resilient, but that the closure member (42) is less resilient to deformation than the tube (14).12. A tap as claimed in claim 1, characterized thereby that a skirt (61) extends from the first sealing edge (60) of the closure member (42) towards the open end (16).13. A tap as claimed in claim 12, characterized thereby that the skirt (61) is adapted to be in flush contact with a section (30.1) of the inner wall (30) of the tube (14) when the closure member (42) is in a closed position.14. A tap as claimed in claim 1, characterized thereby that the closure member (42) forms part of a plunger knob (40).15. A tap as claimed in claim 1, characterized thereby that it includes guiding means (32,34,48,50) for rotatably guiding the plunger knob (40) along a spiral path.16. A tap as claimed in claim 15, characterized thereby that the guiding means (32,34,48,50) includes at least one spiral groove (32,34) in the tube (14) and at least one protrusion (48,50) from the plunger knob (40) slidingly engaged in the spiral groove(s) (32,34).17. A tap (10) for controlling liquid flow having a tube (14) with first (16) and second (18) opposite open ends, an inlet opening (20) leading into the tube (14) between the first (16) and second (18) open ends, an outlet opening (16) defined by the first open end (16), which outlet opening (16) serves as an outlet from the tube (14), the tap (10) being characterized thereby that it includes a valve seat (36) formed between the inlet opening (20) and the outlet opening (16); a closure member (42) sealingly slidably movable in the tube (14); a circumferential sealing edge (60) provided on the closure member (42), the sealing edge (60) being adapted to removably abut against the valve seat (36); and the valve seat (36) and the sealing edge (60) being adapted to deflect the closure member (42) outwardly against the tube (14), when the closure member (42) is in a closed position.18. A tap as claimed in claim 17, characterized thereby that the closure member (42) is displaceable internally along the tube (14) to cause the sealing edge (60) to move across the inlet opening (20) from between a first or closed position, in which the sealing edge (60) of the closure member (42) cooperates with the valve seat (36) to close off the inlet opening (20) from the outlet opening (16), into a second or open position in which the sealing edge (60) is spaced away from the valve seat (36) to permit liquid flow through the inlet opening (20) into the tube (14) and out through the outlet opening (16), and for closure of the outlet opening (16) the reverse procedure taking place to cause the closure member (42) to be moved back into the first or closed position.19. A tap as claimed in claim 17, characterized thereby that it includes a second valve seat (38) formed between the inlet opening (20) and the second open end (18) and a second circumferential sealing edge (66) provided on the closure member (42) being adapted to removably abut against the second valve seat (38).20. A tap as claimed in claim 19, characterized thereby that the first (36) and second (38) valve seats are convexly curved.21. A tap as claimed in claim 17, characterized thereby that the first valve seat (36) is provided with a convexly curved circumferential protuberance (64) extending approximately half-way across the first valve seat (36).22. A tap as claimed in claim 21, characterized thereby that the protuberance (64) is spaced away from an inner wall (30) of the tube (14).23. A tap as claimed in claim 19, characterized thereby that the first (60) and second (66) sealing edges are convexly curved.24. A tap as claimed in claim 17, characterized thereby that the first sealing edge (60) is provided with a convexly curved circumferential protuberance (62) extending approximately half-way across the first sealing edge (60).25. A tap as claimed in claim 24, characterized thereby that the protuberance (62) is located near to an outer wall (52) of the closure member (42).26. A tap as claimed in claim 19, characterized thereby that the first (60) and second (66) sealing edges are adapted to have a small contact area with the first (36) and second (38) valve seats respectively.27. A tap as claimed in claim 17, characterized thereby that the closure member (42) and the tube (14) are both resilient, but that the closure member (42) is less resilient to deformation than the tube (14).28. A tap as claimed in claim 17, characterized thereby that a skirt (61) extends from the first sealing edge (60) of the closure member (42) towards the open end (16).29. A tap as claimed in claim 28, characterized thereby that the skirt (61) is adapted to be in flush contact with a section (30.1) of the inner wall (30) of the tube (14) when the closure member (42) is in a closed position.30. A tap as claimed in claim 17, characterized thereby that the closure member (42) forms part of a plunger knob (40).31. A tap as claimed in claim 17, characterized thereby that it includes guiding means (32,34,48,50) for rotatably guiding the plunger knob (40) along a spiral path.32. A tap as claimed in claim 31, characterized thereby that the guiding means (32,34,48,50) includes at least one spiral groove (32,34) in the tube (14) and at least one protrusion (48,50) from the plunger knob (40) slidingly engaged in the spiral groove(s) (32,34).
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