[특허]Beverage dispenser and automatic shut-off valve

Manitowoc Foodservice Companies, Inc.

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특허 상세정보

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Beverage dispenser and automatic shut-off valve

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65B-003/26
미국특허분류(USC)	141/198; 141/095
출원번호	US-0259541 (2002-09-27)
발명자 / 주소	Seitz, Forrest S. Krebs, Philip M. Darby, Brian J. Myers, Denise K. Cochran, John D.
출원인 / 주소	Manitowoc Foodservice Companies, Inc.
대리인 / 주소	Brink Hofer Gilson & Lione
인용정보	피인용 횟수 : 30 인용 특허 : 39

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A beverage mixing and dispensing valve, or a beverage dispenser including the valve, includes an automatic shut-off features. A user presses a cup or container against a lever on a soft-drink dispenser. The lever closes a switch to activate the opening of a solenoid-operated valve. At the same time, a detection circuit is monitored to determine whether overflow of drink or foam has occurred. When drink or foam overflows and bridges a gap between two metal conductors on the lever, resistance is lowered and electricity flows in the detection circuit. The valve then automatically shuts off the flow of beverage. Energy is saved in keeping the valve open using a pulse width modulation (PWM) technique for voltage to the solenoid, rather than using a steady-state voltage. nd said third tapering diameter portion, and said third tapering diameter portion is positioned intermediate said first tapering diameter portion and said passage in said second end portion of said stopper body. 10. The stopper system according to claim 9, wherein said first end portion of said stopper body comprises a narrowing waist portion positioned intermediate first and second large diameter portions. 11. The stopper system according to claim 10, further comprising: an insertion tube comprising a tubular portion having a first and a second end and an annular flange positioned at said first end of said tubular portion. 12. The stopper system according to claim 11, wherein said insertion tube has a chamfered surface at said first end of said tubular portion. 13. The stopper system according to claim 1, further comprising: an insertion tube comprising a tubular portion having a first and a second end and an annular flange positioned at said first end of said tubular portion. 14. The stopper system according to claim 13, wherein said insertion tube has a chamfered surface at said first end of said tubular portion. 15. A method of plugging a pipe, comprising the steps of: providing an insertion tool; providing a stopper system for plugging the pipe, the stopper system comprising: a stopper body having a first end portion adapted for engagement by an insertion tool and a second end portion; at least one o-ring surrounding a portion of said stopper body intermediate said first end portion and said second end portion; at least one locking tab housed at least in part within said second end portion of said stopper body, said at least one locking tab being adapted to engage a shoulder within the pipe to be plugged to thereby secure the stopper system in place within the pipe to be plugged; and an insertion tube comprising a tubular portion having a first and a second end and an annular flange positioned at said first end of said tubular portion; securing the stopper system to the insertion tool; inserting the stopper system into the pipe to be plugged until said at least one locking tab engages the shoulder within the pipe to be plugged to thereby secure the stopper system in place within the pipe to be plugged; and disengaging the insertion tool from the stopper system. 16. The method according to claim 15, further comprising the steps of: cutting the pipe intermediate the o-ring and the first end portion of the stopper body; threading the exterior of the pipe; and applying a threaded cap to the pipe. 17. A method of plugging a pipe, comprising the steps of: providing an insertion tool; providing a stopper system for plugging the pipe, the stopper system comprising: a stopper body having a first end portion adapted for engagement by an insertion tool and a second end portion; a first o-ring surrounding a portion of said stopper body intermediate said first end portion and said second end portion; a second o-ring surrounding a portion of said stopper body intermediate said first end portion and said first o-ring, said second o-ring being spaced apart from said first o-ring to allow said stopper body to be sawed through intermediate said first o-ring and said second o-ring; and at least one locking tab housed at least in part within said second end portion of said stopper body, said at least one locking tab being adapted to engage a shoulder within the pipe to be plugged to thereby secure the stopper system in place within the pipe to be plugged; securing the stopper system to the insertion tool; inserting the stopper system into the pipe to be plugged until said at least one locking tab engages the shoulder within the pipe to be plugged to thereby secure the stopper system in place within the pipe to be plugged; and disengaging the insertion tool from the stopper system. 18. The method according to claim 17, further comprising the steps of: cutting the pipe intermediate the first o- ring and the second o-ring; threading the exterior of the pipe; and applying a threaded cap to the pipe. 19. A stopper system for plugging a pipe, the stopper system comprising: a stopper body having a first end portion adapted for engagement by an insertion tool and a second end portion; at least one o-ring surrounding a portion of said stopper body intermediate said first end portion and said second end portion; at least one locking tab housed at least in part within said second end portion of said stopper body, said at least one locking tab being adapted to engage a shoulder within the pipe to be plugged to thereby secure the stopper system in place within the pipe to be plugged; and an insertion tube comprising a tubular portion having a first and a second end and an annular flange positioned at said first end of said tubular portion, the insertion tube retaining said at least one locking tab in said second end portion of said stopper body during insertion of the stopper system into the pipe to be plugged. 20. The stopper system according to claim 19, wherein said insertion tube has a chamfered surface at said first end of said tubular portion. 21. The stopper system according to claim 19, further comprising biasing means for biasing said locking tab to project outward from said second end portion of said stopper body. 22. The stopper system according to claim 21, wherein said second end portion of said stopper body has a passage therein and said locking tab is received at least in part in said passage. 23. The stopper system according to claim 22, wherein said locking tab is a first locking tab, the stopper system further comprises a second locking tab, and said second locking tab is received at least in part in said passage. 24. The stopper system according to claim 23, wherein said biasing means is positioned intermediate said first locking tab and said second locking tab. 25. The stopper system according to claim 24, wherein said at least one o-ring is a first o-ring and the stopper system further comprises second and third o-rings, said second o-ring being positioned intermediate said first o-ring and said first end portion of said stopper body, and said third o-ring being positioned intermediate said first o-ring and said second end portion of said stopper body. 26. The stopper system according to claim 24, wherein said stopper body has a snap-ring groove intermediate said at least one o-ring and said first end portion of said stopper body and the stopper system further comprises a snap ring received in part within said snap-ring groove. 27. The stopper system according to claim 26, wherein said at least one o-ring is a first o-ring and the stopper system further comprises second and third o-rings, said second o-ring being positioned intermediate said first o-ring and said snap-ring groove, and said third o-ring being positioned intermediate said first o-ring and said passage in said second end portion of said stopper body. 28. The stopper system according to claim 27, wherein said stopper body has first, second and third tapering diameter portions, said first, second and third tapering diameter portions are located intermediate said snap-ring groove and said passage in said second end portion of said stopper body, said first, second and third o-rings surrounding said stopper body along said first, second and third tapering diameter portions, respectively, said second tapering diameter portion is positioned intermediate said first tapering diameter portion and said snap-ring groove, said first tapering diameter portion is positioned intermediate said second tapering diameter portion and said third tapering diameter portion, said third tapering diameter portion is positioned intermediate said first tapering diameter portion and said passage in said second end portion of said stopper body. 29. The stopper system according to claim 28, wherein said first end portion of said stopper body comprises a narrowing waist portion positioned intermediate first and second large diameter portions. 30. A stopper system for plugging a pipe, the stopper system comprising: a stopper body having a first end portion adapted for engagement by an insertion tool and a second end portion, wherein said first end portion of said stopper body comprises a narrowing waist portion positioned intermediate first and second large diameter portions; at least one o-ring surrounding a portion of said stopper body intermediate said first end portion and said second end portion; and at least one locking tab housed at least in part within said second end portion of said stopper body, said at least one locking tab being adapted to engage a shoulder within the pipe to be plugged to thereby secure the stopper system in place within the pipe to be plugged. 31. The stopper system according to claim 30, further comprising biasing means for biasing said locking tab to project outward from said second end portion of said stopper body. 32. The stopper system according to claim 31, wherein said second end portion of said stopper body has a passage therein and said locking tab is received at least in part in said passage. 33. The stopper system according to claim 32, wherein said locking tab is a first locking tab, the stopper system further comprises a second locking tab, and said second locking tab is received at least in part in said passage. 34. The stopper system according to claim 33, wherein said biasing means is positioned intermediate said first locking tab and said second locking tab.

이 특허에 인용된 특허 (39)

이 특허를 인용한 특허 피인용횟수: 30

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Beverage dispenser and automatic shut-off valve

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Beverage dispenser and automatic shut-off valve

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이 특허에 인용된 특허 (39)

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