Self-contained adhesive metering apparatus
First Claim
1. An apparatus for dispensing liquid, comprising:
- a cartridge assembly having a housing with an opening at one end and a first passage at an opposite end, said opening and said first passage communicating with an interior space of said housing, wherein a cartridge of the liquid is insertable through the opening into the interior space and openable thereafter at said opposite end such that the liquid can flow into said first passage, and a metered dispensing assembly coupled with said cartridge assembly and including a positive displacement pump in fluid communication with said first passage of said cartridge assembly and a valve module having open and closed positions, said valve module being disposed downstream of and in fluid communication with said positive displacement pump for selectively dispensing the liquid.
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Accused Products
Abstract
An apparatus for dispensing liquid includes a cartridge assembly having a housing with an opening at one end and a first passage at an opposite end. The opening and the first passage communicate with an interior space of the housing. A cartridge of the liquid is insertable through the opening into the interior space and openable thereafter at the end of the housing opposite to the open end such that the liquid can flow into the first passage. A metered dispensing assembly is coupled with the cartridge assembly and includes a positive displacement pump in fluid communication with the first passage of the cartridge assembly and a valve module disposed downstream of the positive displacement pump and in fluid communication with the pump for selectively dispensing the liquid.
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Citations
19 Claims
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1. An apparatus for dispensing liquid, comprising:
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a cartridge assembly having a housing with an opening at one end and a first passage at an opposite end, said opening and said first passage communicating with an interior space of said housing, wherein a cartridge of the liquid is insertable through the opening into the interior space and openable thereafter at said opposite end such that the liquid can flow into said first passage, and a metered dispensing assembly coupled with said cartridge assembly and including a positive displacement pump in fluid communication with said first passage of said cartridge assembly and a valve module having open and closed positions, said valve module being disposed downstream of and in fluid communication with said positive displacement pump for selectively dispensing the liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for dispensing liquids, comprising:
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a cartridge assembly having a thermally conductive housing with an opening at one end and a piercing member with a first passage at and opposite end, said opening and said first passage communicating with an interior space of said housing, wherein a cartridge of the liquid is insertable through the opening into the interior space such that a frangible portion thereof is opened by said piercing member to allow liquid flow from the cartridge into said first passage;
at least one heater in thermal communication with said housing; and
a metered dispensing assembly coupled with said cartridge assembly and including a valve module fluidly coupled to said first passage of said cartridge assembly for selectively dispensing the liquid. - View Dependent Claims (10, 11)
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12. A method for dispensing liquid from an apparatus including a cartridge assembly having a housing and a metered dispensing assembly having a gear pump and a valve module, said method comprising the steps of:
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inserting a cartridge of the liquid through an opening formed in one end of the housing;
opening a frangible portion of the cartridge with a piercing member disposed at an opposite end of the housing;
forcing the liquid to flow through a passage formed in the piercing member and to the gear pump which is disposed upstream of the valve module of the dispensing assembly;
metering the flow of the liquid through the gear pump to the valve module; and
discharging the liquid from the apparatus through the valve module. - View Dependent Claims (13, 14, 15, 16, 17, 19)
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18. A method of dispensing liquid from an apparatus including a cartridge assembly having a housing and a metered dispensing assembly having a positive displacement pump and a valve module, said method comprising the steps of:
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inserting a cartridge of the liquid through an opening formed in one end of the housing, the cartridge having a first volume;
opening the cartridge;
causing the liquid to flow through a network of flow passages and hydraulic elements including the positive displacement pump and the valve module which is disposed downstream of the positive displacement pump, the network of flow passages and hydraulic elements having a second volume;
establishing a ratio of said second volume to said first volume of less than or equal to about ten percent;
discharging the liquid from the apparatus through the valve module.
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Specification