초록 ▼

A device for dispensing a viscous material and a method for controlling the dispensing pressure. The device has a manually actuated control valve, that, when depressed, releases high pressure gas from the source, such as a CO2 cartridge, into a gas enclosure. An indicator signals a pre-determined pr

A device for dispensing a viscous material and a method for controlling the dispensing pressure. The device has a manually actuated control valve, that, when depressed, releases high pressure gas from the source, such as a CO2 cartridge, into a gas enclosure. An indicator signals a pre-determined pressure in the gas enclosure sufficient to forcefully dispense a viscous material from a product cartridge.

대표청구항 ▼

1. A device for dispensing a viscous product, the device comprising;a housing component having a cavity and a dispensing orifice;a movable wall positioned in said cavity operable to separate a product enclosure from a gas enclosure;a fluid passage providing fluid communication between a pressurized

1. A device for dispensing a viscous product, the device comprising;a housing component having a cavity and a dispensing orifice;a movable wall positioned in said cavity operable to separate a product enclosure from a gas enclosure;a fluid passage providing fluid communication between a pressurized gas source and said gas enclosure;a manually actuated control valve associated with said pressurized gas source, said control valve having an actuator which, upon actuation, is adapted to release gas from said pressurized gas source into said fluid passage and said gas enclosure;a pressure relief valve in fluid communication with said gas enclosure;an operator-activated trigger mechanism operable to open said orifice; anda second operator-activated trigger mechanism located adjacent said actuator of said control valve and operable to engage said actuator;wherein said movable wall is configured to move in response to a force exerted by said pressurized gas enclosure so as to cause the viscous product to dispense from said orifice.2. A device for dispensing a viscous product according to claim 1, wherein said pressure relief valve is adapted to indicate a pre-determined pressure in said gas enclosure.3. A device for dispensing a viscous product according to claim 2, wherein said pressure relief valve produces an audible signal.4. A device for dispensing a viscous product according to claim 3, wherein an adjustment mechanism is associated with said pressure relief valve operable to adjust said pre-determined pressure.5. A device for dispensing a viscous product according to claim 2, wherein said second operator-activated trigger mechanism engages said actuator upon linear movement.6. A device for dispensing a viscous product according to claim 1, wherein said second operator-activated trigger mechanism engages said actuator upon rotary movement.7. A device for dispensing a viscous product from a viscous product cartridge, the device comprising:a first housing component adapted to retain the viscous product cartridge and operable to cooperate with the viscous product cartridge to form a gas enclosure separated from a product enclosure by a movable wall;a second housing component having an inlet in sealed fluid communication with said gas enclosure;a fluid passage providing fluid communication between said inlet and said gas enclosure;a pressurized gas source in fluid communication with said inlet;a manually actuatable control valve having an actuator and associated with said pressurized gas source, which, upon actuation, is operable to release gas from said pressurized gas source through said inlet and into said fluid passage, and said manually actuatable control valve further adapted to return said actuator to a closed position subsequent said actuation;an operator-actuated trigger mechanism adapted to permit dispensing of the viscous product; anda second operator-activated trigger mechanism located adjacent said actuator of said control valve, wherein engagement of said second trigger actuates said control valve, thereby releasing a pressurized gas into said gas enclosure.8. A device for dispensing a viscous product according to claim 7, further comprising a pressure relief valve in fluid communication with said gas enclosure.9. A device for dispensing a viscous product according to claim 8, wherein said pressure relief valve cooperates with a pneumatic indicator to produce an audible signal when a pressure in said gas enclosure exceeds a pre-determined pressure.10. A device for dispensing a viscous product according to claim 9, wherein an adjustment mechanism is associated with said pressure relief valve operable to adjust said pre-determined pressure.11. A device for dispensing a viscous product according to claim 9, wherein said pressure relief valve is adjustable between about 15 and about 75 psi.12. A device for dispensing a viscous product according to claim 7, wherein said trigger mechanism is operable to engage said actuator upon linear movement.13. A device for dispensing a viscous product according to claim 7, wherein said trigger mechanism is operable to engage said actuator upon rotary movement.14. A device for dispensing a viscous product according to claim 7, wherein said second housing is adapted to retain said pressurized gas cartridge.15. A device for dispensing a viscous product according to claim 7, wherein said movable wall is a wall of the viscous product cartridge.16. A method for facilitating the pressurized discharge of a viscous product from a viscous product cartridge, the method comprising:providing a cavity in a dispensing device adapted to discharge the viscous product from the viscous product cartridge;integrating a gas enclosure chamber within a housing of said dispensing device;supplying a control valve adapted to selectively permit gas flow from a pressurized gas source to a fluid passage;connecting said fluid passage to said gas enclosure;incorporating an indicator operable to signal a pre-determined pressure in said gas enclosure;opening an orifice to discharge the viscous product from the viscous product cartridge with an operator-activated trigger mechanism; andopening said control valve to selectively permit gas flow from said pressurized gas source to said fluid passage with a second operator-activated trigger mechanism.17. A method according to claim 16, wherein said signal is audible and driven by pneumatic means.18. A method according to claim 16, further comprising providing a recommended time for allowing pressurization of said gas enclosure.