IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0560877
(1990-07-31)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
11 인용 특허 :
36 |
초록
▼
A replaceable, non-refillable or single use valve for returnable, pressurized gas cylinders. The valve includes a valve housing removably mounted on the cylinder and a replaceable valve cartridge removably mounted in the valve housing. The valve cartridge includes a housing and a valve body movable
A replaceable, non-refillable or single use valve for returnable, pressurized gas cylinders. The valve includes a valve housing removably mounted on the cylinder and a replaceable valve cartridge removably mounted in the valve housing. The valve cartridge includes a housing and a valve body movable in the housing movable by means of a handle to allow and prevent release of pressurized gas from the cylinder. A nozzle, which slidably fits in a vertical slot in the valve housing, is provided for venting pressurized gas from the cylinder.
대표청구항
▼
1. Non-refillable valve for a pressure container, comprising: (A) a housing, having an upper end and a lower end, having a central bore thereby forming a housing wall, and having a slot, in the housing wall, which extends from the top of the housing to a position down the housing, the lower end o
1. Non-refillable valve for a pressure container, comprising: (A) a housing, having an upper end and a lower end, having a central bore thereby forming a housing wall, and having a slot, in the housing wall, which extends from the top of the housing to a position down the housing, the lower end of said housing being adapted to sealingly engage said pressure container in a manner which provides communication between said pressure container interior and the contents therein and said lower portion of said central bore; and (B) a replaceable valve cartridge, the replaceable valve cartridge being positioned in a slidable and removable manner in the central bore of housing (A), the replaceable valve cartridge comprising: (a) a housing, having a central bore which has a lower portion that is narrower than the middle portion of said central bore and which has an upper portion that is narrower than the middle portion of said central bore, and having a side port which communicates with the lower region of said middle portion of said central bore, said central bore, via said portion, communicating with said lower portion of said central bore of housing (A); (b) a nozzle, having a bore therein which communicates with the atmosphere, said nozzle being positioned on the side of said housing (a) and being in communication with said middle portion of said central bore via said side port in said housing (a); said nozzle extending through the lower portion of said slot in said housing wall of housing (A), said nozzle being slidable in said slot; (c) valve stem means positioned in said upper portion of said central bore in a rotatable manner which advances the valve stem means back and/or forth in said central bore, said valve stem means having a threadable connection with said upper portion of said central bore, said valve stem means containing a centrally-located bore in the bottom portion thereof, the central axis of said bore being coaxial with the central axis of said upper portion of said central bore of said housing; (d) retaining means having a passageway therein, the upper portion of said valve stem means (c) being slidably and/or rotatably positioned in said passageway, said retaining means (b) being detachably affixed to the upper end of said housing wall of housing (A); and (e) a resilient valve sealing member which has a body portion and which has a post positioned on the top of said body portion, said post slidingly engaging said bore in said valve stem means (c), said body portion having a top rim portion which has a lateral dimension which is larger than the lateral dimension of said upper portion of said central bore of said housing (a) and which is less than the lateral dimension of the middle portion of said central bore of said housing (a), said body portion having a bottom seating portion which is capable of seating at or on the interface of said middle portion and bottom portion of said central bore of said housing (a), said top rim portion being continuous such that it does not contain any indentations, slots, or gaps, and said body portion not containing any arms, said top rim portion of said valve sealing member (e) being compressingly positioned in said upper portion of said central bore when said valve is inactive or being filled, said valve sealing member (e) being pushed into said middle portion by means of said valve stem means (c) when said valve cartridge (B) is placed in the active position, said valve sealing member (e) being seated against said interface between said middle and lower portions of said central bore when said valve cartridge (B) is closed, said valve sealing member (e) being positioned in said middle chamber above said seating interface when said valve cartridge (B) is used for discharge of said container contents, and said valve sealing member (e) sealingly engaging said seating interface when refill of said container with pressurized fluid is attempted, housing (a) being forced upwards in the central bore of housing (A) when said container contains pressurized gas, when the top of valve stem means (c) contacts the inside of retainer means (d), the continued outward turning of valve stem means (c) causes housing (a) to be forced downward on the internal threads of the central bore of housing and the external threads of valve stem (c), valve cartridge (B) being removable so that it can be replaced when said container is to be refilled with pressurized gas. 2. The non-refillable valve of claim 1 wherein the slot in housing (A) has a longitudinal orientation. 3. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), said bore in said nozzle (b) runs lengthwise through said nozzle (b). 4. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), said nozzle (b) is positioned in said side port in said housing (a). 5. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), said valve stem means (c) is mounted in said upper portion of said central bore in a screwable manner. 6. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), said valve stem means (c) has an externally-located knob for turning said valve stem means (c). 7. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), an O-ring is mounted in a groove in the valve stem means (c) positioned in said upper portion of said central bore and sealingly engages the surface of said upper portion of said central bore. 8. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), said valve sealing member is made of a resilient plastic. 9. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), the bottom rim of the body portion is bevelled. 10. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), said bore in said nozzle (b) runs lengthwise through said nozzle (b), said nozzle (b) is positioned in said side port in said housing (a), said pressure container is a pressurized gas container, an O-ring is mounted in a groove in the valve stem means (c) positioned in said upper portion of said central bore and sealingly engages the surface of said upper portion of the central bore, said valve sealing member (e) is made of a resilient plastic, and the bottom rim of the body portion is bevelled. 11. The non-refillable valve as claimed in claim 1 wherein, in valve cartridge (B), said pressure container is a pressurized gas container. 12. The non-refillable valve as claimed in claim 11 wherein, in valve cartridge (B), said pressurized gas container is a pressurized gas cylinder. 13. The non-refillable valve as claimed in claim 1 wherein biased valve means (C) is positioned in the central bore of housing (A) below the bottom of valve cartridge (B) located in central bore of housing (A), biased valve means (c) normally being biased in a closed position, and protrusion means is located on the end of housing (a) towards biased valve means (C), when housing (a) is moved towards biased valve means (C), the protrusion means contacts biased valve means (C) and forces biased valve means (C) into an open position. 14. The non-refillable valve as claimed in claim 13 wherein the protrusion means is a shaped rod and biased valve means (C) is biased by means of a spring. 15. The non-refillable valve as claimed in claim 14 wherein the central bore of housing (A) contains a rim, located below valve cartridge (B), which serves as a valve seat for spring-biased valve means (C). 16. The non-refillable valve as claimed in claim 13 wherein the slot in the housing wall of housing (A) has, at its lower end, a downwardly slanted slot portion, nozzle (b) being located in and slidable in the slanted slot portion, when nozzle (b) is moved to the lower end of the slanted slot portion, the protrusion means contacts and forces biased valve means (C) into the open position, and, when nozzle (b) is moved to the upper end of the slanted slot, the protrusion means moves upwards far enough to allow biased valve means (C) to return to the closed position.
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