Abstract: A fluid dispenser for dispensing small doses of fluid includes a dispenser housing, a diaphragm assembly, a displacement chamber, and a dispensing luer. The dispenser housing has a first end for receiving the fluid and a second end for dispensing the fluid. The dispenser housing defines a fluid flow path from a receiving chamber adjacent the first end to a dispensing chamber adjacent the second end. The diaphragm assembly includes a first diaphragm within the receiving chamber and a second diaphragm within the dispensing chamber wherein the first diaphragm is operably connected to the second diaphragm. The diaphragm assembly is movable between a first position wherein the first diaphragm moves the fluid from the receiving chamber to the dispensing chamber along the fluid flow path and a second position wherein the second diaphragm moves the fluid from the dispensing chamber to the displacement chamber.

Abstract: A positive displacement pump for dispensing fluid includes a fluid body sub-assembly including a fluid body and a negating check valve. The negating check valve includes a negating body defining a dispensing opening. The fluid body and the negating body form a flow path for the fluid. The fluid is dispensed through the dispensing opening. The positive displacement pump is primed by allowing trapped air within the flow path to flow out of the dispensing opening. The negating check valve may be fully or partially attached to the fluid body. The trapped air within the flow path flows out of the dispensing opening when the negating check valve is partially attached to the fluid body.

Abstract: A syringe assembly contains a fluid material, preferably two reactive fluid materials. The syringe assembly includes a syringe body having at least one barrel and a piston assembly movable within the barrel. An activatable plunger is in contact with the piston assembly effects dispensing movement of the piston assembly. The piston assembly includes an outer piston in sealed engagement with the barrel and an inner piston in sealed engagement with the outer piston. The inner piston is movable within the outer piston with and against the bias of a spring to maintain the inner piston in contact with the reactive material in the barrel upon thermal expansion and contraction of the reactive material.

Abstract: A fluid dispenser for dispensing small doses of fluid includes a dispenser housing, a diaphragm assembly, a displacement chamber, and a dispensing luer. The dispenser housing has a first end for receiving the fluid and a second end for dispensing the fluid. The dispenser housing defines a fluid flow path from a receiving chamber adjacent the first end to a dispensing chamber adjacent the second end. The diaphragm assembly includes a first diaphragm within the receiving chamber and a second diaphragm within the dispensing chamber wherein the first diaphragm is operably connected to the second diaphragm. The diaphragm assembly is movable between a first position wherein the first diaphragm moves the fluid from the receiving chamber to the dispensing chamber along the fluid flow path and a second position wherein the second diaphragm moves the fluid from the dispensing chamber to the displacement chamber.

Abstract: A syringe assembly contains a fluid material, preferably two reactive fluid materials. The syringe assembly includes a syringe body having at least one barrel and a piston assembly movable within the barrel. An activatable plunger is in contact with the piston assembly effects dispensing movement of the piston assembly. The piston assembly includes an outer piston in sealed engagement with the barrel and an inner piston in sealed engagement with the outer piston. The inner piston is movable within the outer piston with and against the bias of a spring to maintain the inner piston in contact with the reactive material in the barrel upon thermal expansion and contraction of the reactive material.

Abstract: A positive displacement pump for dispensing fluid includes a fluid body sub-assembly including a fluid body and a negating check valve. The negating check valve includes a negating body defining a dispensing opening. The fluid body and the negating body form a flow path for the fluid. The fluid is dispensed through the dispensing opening. The positive displacement pump is primed by allowing trapped air within the flow path to flow out of the dispensing opening. The negating check valve may be fully or partially attached to the fluid body. The trapped air within the flow path flows out of the dispensing opening when the negating check valve is partially attached to the fluid body.

Abstract: The present invention relates to an anti-drip valve for precision dispensing fluid from a cartridge. The anti-drip valve includes a y-shaped anti-drip valve body and a poppet extending therethrough. The body and poppet create a seal within the anti-drip valve and control the flow of fluid from the valve to a dispense tip.

Abstract: A fluid dispensing apparatus includes an operable peristaltic pump. The pump supports a rigid container which includes an aggressive fluid which is to be dispensed from the container. A vent tube and a dispensing tube extends from the container through the pump. Operation of the pump causes fluid to be pumped out from the container through the dispensing tube while air is pumped into the container through the vent tube. This equalizes pressure in the container and allows fluid to be dispensed from a rigid container.

Abstract: The present invention relates to an anti-drip valve for precision dispensing fluid from a cartridge. The anti-drip valve includes a y-shaped anti-drip valve body and a poppet extending therethrough. The body and poppet create a seal within the anti-drip valve and control the flow of fluid from the valve to a dispense tip.

Abstract: A dispensing apparatus provides for the dispensing of product from a collapsible tube. The apparatus includes a body for supporting the tube. The body has a forward end for accommodating a dispensing end of the tube and rearward end for accommodating a closed end of the tube. An elongate actuatable plunger is supported by the body. The plunger includes an elongate rod and a base attached to the rod. Actuating means is provided for effecting movement of the plunger in a first direction along the body for engagement with the collapsible tube wall thereby deforming the tube wall and dispensing the contents of the tube from the dispensing end. The actuating means also provides for retractable movement of the plunger in the second direction opposite the first direction. The base is positioned on the rod for dispensing engagement with the tube upon movement of the plunger in the first direction and movable out of dispensing engagement with the tube upon in a second direction.

Abstract: The subject invention is a system for dispensing a controlled amount of fluid product from a dispensing container which includes a pneumatically driven dispensing actuator. This actuator includes a dispensing cylinder and a movable dispensing piston. The dispensing piston is movable under pneumatic pressure within the cylinder, the cylinder including a volume of hydraulic fluid under the pneumatic pressure acting against the dispensing piston to selectively prevent movement of the dispensing piston. The invention further includes a means for selectively reducing the volume of the hydraulic fluid in the dispensing cylinder to allow the controlled movement of the dispensing piston. The controlled movement of the dispensing piston causes controlled displacement of the fluid product from the dispensing container. Advantageously, with the subject invention, a force may be generated and applied to a plunger, which can be accurately controlled.

Abstract: A fluid dispensing apparatus includes an operable peristaltic pump. The pump supports a rigid container which includes an aggressive fluid which is to be dispensed from the container. A vent tube and a dispensing tube extends from the container through the pump. Operation of the pump causes fluid to be pumped out from the container through the dispensing tube while air is pumped into the container through the vent tube. This equalizes pressure in the container and allows fluid to be dispensed from a rigid container.

Abstract: A dispensing apparatus provides for the dispensing of product from a collapsible tube. The apparatus includes a body for supporting the tube. The body has a forward end for accommodating a dispensing end of the tube and rearward end for accommodating a closed end of the tube. An elongate actuatable plunger is supported by the body. The plunger includes an elongate rod and a base attached to the rod. Actuating means is provided for effecting movement of the plunger in a first direction along the body for engagement with the collapsible tube wall thereby deforming the tube wall and dispensing the contents of the tube from the dispensing end. The actuating means also provides for retractable movement of the plunger in the second direction opposite the first direction. The base is positioned on the rod for dispensing engagement with the tube upon movement of the plunger in the first direction and movable out of dispensing engagement with the tube upon in a second direction.

Abstract: The subject invention is a system for dispensing a controlled amount of fluid product from a dispensing container which includes a pneumatically driven dispensing actuator. This actuator includes a dispensing cylinder and a movable dispensing piston. The dispensing piston is movable tinder pneumatic pressure within the cylinder, the cylinder including a volume of hydraulic fluid under the pneumatic pressure acting against the dispensing piston to selectively prevent movement of the dispensing piston. The invention further includes a means for selectively reducing the volume of the hydraulic fluid in the dispensing cylinder to allow the controlled movement of the dispensing piston. The controlled movement of the dispensing piston causes controlled displacement of the fluid product from the dispensing container. Advantageously, with the subject invention, a force may be generated and applied to a plunger, which can be accurately controlled.

Abstract: A UV curing lamp assembly permits adjustable positioning of a UV curing lamp with respect to a bracket supporting a reflector. The assembly includes an elongate UV lamp having opposed ends. A reflector having a central base and a curved reflective wall includes a pair of opposed openings through the reflector wall for passage of the UV lamp therethough. A bracket adjustably supports the reflector and the lamp. The bracket includes a bracket body movably supporting a mounting member for adjustably supporting the reflector with respect to the bracket body. A support arm extends from the bracket body towards one of the openings in the reflector. The support arm adjustably supports one of the ends of the UV lamp with respect to the reflector.

Abstract: A single stroke fluid dispense system, including a dispense member having a dispense end defining a dispense end opening and a container well communicating with the dispense end opening for receiving a fluid to be dispensed. A closure cap is supported over the dispense end opening of the dispense member and further defines a fluid passageway therethrough in fluid communication with the container well. A compression assembly for forcing the fluid through the fluid passageway of the closure cap is also provided. A sealing piston assembly maintains the closure cap in sealing engagement with the dispense member. The closure cap may further defined a burst port at one end of the fluid passageway facing the container well which is especially useful for dispensing fluid from a flexible rupturable container. The compression assembly maintains fluid integrity between the container and the closure cap about the rupture port throughout dispensement so as to thwart fluid from leaking into the container well.

Abstract: A dispensing device provides for dispensing of flowable material such as adhesives. The dispensing device includes a housing having a chamber with an inlet port and an outlet port for receiving and dispensing the flowable material. A valve assembly is supported within the housing having a moveable valve stem for opening and closing the outlet port. A flexible sleeve circumferentially surrounds a portion of the valve stem for isolating the flowable material from the moveable valve stem.

Abstract: A minimal wear valve assembly which includes a fluid reservoir having an inlet port and an outlet port for passage of the fluid therethrough. The reservoir defines a valve seat about and downstream of the outlet port. The assembly includes a valve having a first substantially non-deformable valve surface. The valve is movable with respect to the valve seat from an open condition which permits flow of the fluid through the outlet port to a closed condition which prevents flow of the fluid through the outlet port. The valve supports a sealing member for movement with the valve. The sealing member has greater compressibility than the first valve surface and provides a seal between the first valve surface and the valve seat upon movement of the valve to the closed condition.

Abstract: A rotating fluid wide band applicator head which permits application of a relatively wide band of fluid without the necessity for translational motion of the head with respect to the object being coated. The applicator head includes a rotatable body having an axis of rotation and having a fluid delivery chamber disposed within the body. A plurality of bounded channels having open inner ends and open outer ends are provided. The open inner ends of the channels are in fluid communication with the fluid delivery chamber, to receive fluid therefrom and transport the fluid. The open outer ends of the channels are arranged to discharge the fluid in a desired pattern, resulting in deposition of a band of fluid having a desired width.