Granted Patent B2

US 12,611,683 · App. 17/177,401 · Granted Apr 28, 2026

Inventors: Stephen R. Des Jardins (Encinitas, CA); Alan R. Lewis (Carlsbad, CA); Jared Wilburn (San Marcos, CA); Robert J. Wright (Carlsbad, CA)

Assignee: Nordson Corporation

B05B1/24B05B1/02B05C5/001B05C5/0225B05C11/1034

Abstract

Claims (56)

1 . A method of jetting fluid material with a jet dispenser including an actuator and a jet cartridge operatively coupled to the actuator and having a nozzle, the jet cartridge having an outer body and a flow insert received into the outer body, the method comprising:

receiving fluid material into a fluid passage in the jet cartridge, the fluid passage being defined between the outer body and the flow insert;

directing the fluid material through the jet cartridge along a longitudinal axis thereof in a direction toward the nozzle;

heating the fluid material directed through the jet cartridge to a target temperature;

maintaining the target temperature as the fluid material enters the nozzle; and

jetting heated fluid material through the nozzle,

wherein the fluid passage extends about and along a longitudinal axis of the outer body between a cylindrical face within the outer body and a periphery of the flow insert with a helical shape and/or a spiral shape.

2 . The method of claim 1 , wherein directing the fluid material through the fluid passage includes directing the fluid material peripherally about at least a helically-shaped fluid passage groove of the flow insert.

3 . The method of claim 1 , wherein heating the fluid material directed through the jet cartridge includes directly contacting the outer body with a heating element and energizing the heating element with a power supply to transfer heat to the fluid material in a helically-shaped fluid passage groove of the flow insert, and maintaining the target temperature of the fluid material includes selectively controlling the power supply.

4 . The method of claim 3 , further comprising configuring the flow insert with an insert shaft to be removably received within an insert socket of the outer body such that the flow insert and the outer body define the fluid passage therebetween,

wherein the heating element is an electrical heating element, the electrical heating element directly contacting the outer body and being releasably coupleable to a jet dispenser actuator with a clamp, the clamp being configured to hold the electrical heating element, the outer body, and the flow insert in axial compression against the jet dispenser actuator.

5 . The method of claim 1 , further comprising:

configuring the outer body to include an upper surface configured to receive an insert shaft of the flow insert; and

configuring the flow insert to include a lower surface,

wherein maintaining the target temperature of the fluid material includes selectively controlling a power supply in response to a sensed temperature.

6 . The method of claim 1 further comprising configuring the outer body to receive the fluid material and direct the fluid material into a helically-shaped fluid passage groove of the flow insert.

7 . The method of claim 1 further comprising:

configuring the flow insert with an insert shaft to be removably received within an insert socket of the outer body such that the flow insert and the outer body define the fluid passage therebetween; and

arranging the fluid passage to extend about and along the longitudinal axis of the outer body with a helical shape and/or a spiral shape.

8 . The method of claim 1 further comprising configuring the outer body to receive heat from a heating element and transferring the heat to the fluid material flowing through a helically-shaped fluid passage groove of the fluid passage.

9 . The method of claim 1 further comprising:

configuring the outer body to receive the fluid material and direct the fluid material into a helically-shaped fluid passage groove of the flow insert;

configuring the flow insert with an insert shaft to be removably received within an insert socket of the outer body;

arranging the fluid passage with a fluid passage groove to extend about and along the longitudinal axis of the outer body; and

configuring the outer body to receive heat from a heating element and transferring the heat to the fluid material flowing through a helically-shaped fluid passage groove that defines the fluid passage.

10 . The method of claim 1 , further comprising arranging the fluid passage with a helically-shaped fluid passage groove to extend at least partially circumferentially about the longitudinal axis.

11 . The method of claim 1 , further comprising configuring the flow insert to include a helically-shaped groove at least partially defining the fluid passage.

12 . The method of claim 1 , further comprising:

configuring the flow insert to include an insert shaft;

configuring the outer body with an insert socket; and

configuring the fluid passage between the insert shaft of the flow insert and the insert socket of the outer body.

13 . The method of claim 1 , further comprising:

configuring the flow insert to include an insert shaft and the outer body to include an insert socket; and

configuring the flow insert and the outer body with a frictional connection such that the outer body releasably receives the flow insert.

14 . The method of claim 13 , further comprising:

configuring the outer body to include an upper surface configured to receive the insert shaft of the flow insert; and

configuring the flow insert to include a lower surface,

wherein the insert shaft is configured to be received in the insert socket of the outer body such that the lower surface of the flow insert contacts the upper surface of the outer body.

15 . The method of claim 1 , further comprising:

configuring a sealing element within a seal groove between the flow insert and the outer body, wherein the sealing element being configured to contain fluid material between the flow insert and the outer body.

16 . The method of claim 1 , further comprising:

configuring a heating element to peripherally surround the outer body, and the outer body directly contacts the heating element for receiving heat from the heating element,

configuring the outer body to transfer heat to the fluid material in a helically- shaped fluid passage groove of the flow insert, and

energizing the heating element with a power supply controllable to achieve a target temperature of the fluid material flowing through the fluid passage.

17 . The method of claim 1 , further comprising:

configuring the outer body to include an annular shoulder that directly contacts a heating element for receiving heat from the heating element; and

configuring the outer body to transfer heat to the fluid material in a helically- shaped fluid passage groove of the flow insert.

18 . The method of claim 1 , further comprising:

configuring the outer body and the flow insert to be maintained in axial engagement by a heating element, configuring the outer body to receive heat from the heating element and transfer the heat to the fluid material flowing through a helically-shaped fluid passage groove that defines the fluid passage and configuring the jet cartridge to be releasably coupleable to a jet dispenser actuator via the heating element.

19 . The method of claim 1 , further comprising:

configuring the outer body to receive the fluid material and direct the fluid material into a helically-shaped fluid passage groove of the flow insert; and

configuring a valve member having a valve stem tip to contact a valve seat to jet heated fluid material through the nozzle, the valve stem tip being disposed within the flow insert.

20 . The method of claim 1 , further comprising:

configuring the outer body to include an upper-a-surface configured to receive an insert shaft of the flow insert; and

configuring a frictional connection between the outer body and the flow insert with a sealing element within a seal groove between the flow insert and the outer body,

wherein the frictional connection being configured to be disengaged for exposing the fluid passage without use of an independent tool.

Assignments (1)

Continuity (2)

References Cited (36)