Controllable liquid dispensing device
AssigneeSpeedline Technologies, Inc.
InventorWilliam Cavallaro
Life of this patent
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Abstract
A liquid dispensing system includes a selectively adjustable material control device and a sealing device within a dispensing device. The sealing device is in communication with a switching device to move the sealing device between a first position and a second position. The first position of the sealing device allows the material control device to draw a volume of material into the dispensing device and the second position of the sealing device allows the material control device to force the volume of material to dispense from the dispensing device.
Claims21
A liquid dispensing system comprising:
- a housing having an inner chamber;
- a material control device that is movable to draw a predetermined quantity of dispensing material into the inner chamber and to force the dispensing material from the inner chamber;
- a switching device;
- a sealing device disposed within the inner chamber and in communication with said switching device to move said sealing device between a first position, a second position, and a third position;
- said first position of said sealing device allowing said material control device to draw a volume of material into said inner chamber;
- said second position of said sealing device allowing said material control device to force said volume of material from said inner chamber;
- and
- said third position of said sealing device allows purging of air from the liquid dispensing system prior to dispensing.
A dispensing system for dispensing a volume of material, the dispensing system comprising:
- an inlet to receive the material to be dispensed from the dispensing system;
- an outlet from which material is dispensed;
- a housing;
- a piston disposed within the housing and movable between a first position and a second position, the piston defining an inner chamber within the housing for containing the material, a volume of the inner chamber being variable based on a position of the piston within the chamber;
- and
- a sealing device that selectively seals the inlet and the outlet, the sealing device being movable between a first position at which material is allowed to enter the inner chamber through the inlet, a second position at which material is allowed to exit the inner chamber through the outlet, and a third position at which material is allowed to enter the inner chamber through the inlet and exit the inner chamber through the outlet to allow priming of the dispensing system.
A method of dispensing a volume of material from a dispensing system having an inner chamber with an adjustable volume, the inner chamber having an inlet to receive the material and an outlet from which the material is dispensed, the method comprising steps of:
- opening the inlet and the outlet to allow material to flow through the dispensing system to purge air from the chamber;
- closing the outlet to prevent material from exiting the outlet;
- increasing the volume of the inner chamber to draw material into the inner chamber through the inlet;
- closing the inlet;
- opening the outlet;
- and
- decreasing the volume of the inner chamber to dispense the material from the outlet.
A dispensing system for dispensing a volume of material, the dispensing system comprising:
- an inlet to receive the material to be dispensed from the dispensing system;
- an outlet from which material is dispensed;
- a housing having an inner chamber, coupled to the inlet and the outlet, having a volume;
- means for purging air from the inner chamber;
- means for increasing the volume of the inner chamber to draw material into the inner chamber through the inlet;
- and
- means for decreasing the volume of the inner chamber to dispense material through the outlet.
Dependencies are inferred from the claim text.