A self-sealing nozzle for a liquid dispensing device having a valve and a discharge port, the discharge port including a plug that may be bulbous in shape, the plug being retained by a retainer at the end of the discharge passage leading to the port. An elastomeric seal has an annular inner surface
A self-sealing nozzle for a liquid dispensing device having a valve and a discharge port, the discharge port including a plug that may be bulbous in shape, the plug being retained by a retainer at the end of the discharge passage leading to the port. An elastomeric seal has an annular inner surface that seals against the plug when liquid is not being dispensed by said valve, but expands and forms a passage around the plug when liquid is being dispensed by said valve.
대표청구항▼
What is claimed: 1. A fluid dispensing device comprising a container for containing a fluid, a valve controlling the release of fluid from said container, a discharge tube having an inner opening communicating with a passage extending from said valve to the ambient, an actuator for opening said val
What is claimed: 1. A fluid dispensing device comprising a container for containing a fluid, a valve controlling the release of fluid from said container, a discharge tube having an inner opening communicating with a passage extending from said valve to the ambient, an actuator for opening said valve for initiating a discharge from said dispenser, a self-sealing nozzle at an end of said discharge tube, said self-sealing nozzle permitting the release of fluid while said valve is releasing fluid and sealing said inner opening from the ambient when said valve is not releasing fluid wherein said nozzle includes a plug, a retaining member for said plug at said end of said discharge tube, and an elastomeric seal around said plug, said seal having a contracted condition wherein an inner surface of said seal is sealed against said plug when fluid is not being expelled through said valve and having an expanded condition wherein said inner surface is spaced form said plug thereby allowing fluid to flow from said passage and around said plug when fluid is being expelled from said valve. 2. The fluid dispensing device of claim 1 wherein said self-sealing nozzle permits the release of fluid when the valve is releasing fluid and seals said inner opening when said valve is not releasing fluid independent of the operation of said actuator. 3. The fluid dispensing device of claim 1 wherein said retaining member defining an opening through which fluid from said passage can flow around said plug. 4. The fluid dispensing device of claim 3 wherein said retaining member comprises an elongate stem one end of which is joined to said plug and another end of which extends into said inner opening and said opening of said retaining member is formed between a wall of said passage and a surface of said stem. 5. The fluid dispensing device of claim 4 wherein said plug is generally cylindrical. 6. A dispensing device having a valve and a discharge port, said discharge port having a distal end and an opening in said distal end, said dispensing device further having a passage extending from said valve to said opening in said discharge port and having a self-sealing nozzle at said discharge port, said self-sealing nozzle comprising, a plug, a retaining member for retaining said plug at said end of said discharge tube, said retaining member defining an opening through which fluid from said passage can flow around said plug, and an elastomeric seal around said plug, said seal having a contracted condition wherein an inner surface of said seal is sealed against said plug when fluid is not being expelled through said valve and having an expanded condition wherein said inner surface is spaced from said plug thereby allowing fluid to flow from said passage and around said plug when fluid is being expelled from said valve. 7. The fluid dispensing device of claim 6 and further comprising an actuator for controlling said valve and wherein said self-sealing nozzle permits the release of fluid when the valve is releasing fluid and seals said inner opening when said valve is not releasing fluid independent of the operation of said actuator. 8. In a dispensing device comprising a container for containing a fluid to be dispensed, a valve for dispensing fluid from said container, a moveable actuator for controlling said valve, a discharge tube having an opening communicating with a passage leading to said valve through which said fluid will flow, the improvement comprising a self-sealing nozzle in said discharge tube for sealing said passage from the ambient when said valve is not releasing fluid from said container and for opening said passage to the ambient when said valve is releasing fluid from said dispensing container, said self-sealing nozzle including a plug, a retaining member for retaining said plug at said end of said discharge tube, and an elastomeric seal around said plug, said seal having a contracted condition wherein an inner surface os said seal is sealed against said plug when fluid is not being expelled through said valve and having an expanded condition wherein said inner surface is spaced form said plug thereby allowing fluid to flow from said passage and around said plug when fluid is being expelled from said valve. 9. The dispensing device of claim 8 wherein said retaining member further comprises an opening through which fluid from said passage can flow around said plug.
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이 특허에 인용된 특허 (16)
Demarest Scott W. (Caledonia WI), Aerosol actuator and overcap assembly.
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