IP Library Granted Patent US 12,358,224
Granted Patent B2
US 12,358,224 · App. 18/493,033 · Granted Jul 15, 2025

Apparatus, system and method of operating an additive manufacturing nozzle

Inventors: William MacNeish (St. Petersburg, FL); Erik Gjovik (St. Petersburg, FL)
B29C64/295B29C64/106B29C64/118B29C64/209B29C64/40H05B3/12H05B3/28H05B3/46H05B6/36B33Y30/00H05B2203/007H05B2203/014H05B2203/021H05B2203/037H05B2206/022H05B2206/024
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Quick Facts
Patent No.
US 12,358,224
App. No.
18/493,033
Granted
Jul 15, 2025
Kind
B2
Abstract

Apparatuses, systems and methods of providing heat to enable an FDM additive manufacturing nozzle having refined print control and enhanced printing speed. The heating element may include at least one sheath sized to fittedly engage around an outer circumference of the FDM printer nozzle; at least one wire coil at least partially contacting an inner diameter of the sheath; and at least one energy receiver associated with the at least one wire coil.

Claims (30)

1. A heating element for a 3D printer nozzle, comprising:

at least one sheath comprising a first inner diameter and a first outer diameter, the at least one sheath sized to engage around an outer circumference of the 3D printer nozzle;

at least one wire coil contacting the first inner diameter of the at least one sheath and communicative with an energy source capable of heating the at least one wire coil; and

at least one resistance sensor embedded in the at least one sheath, the at least one resistance sensor configured to sense a resistance change in the at least one wire coil.

2. The heating element of claim 1 , wherein the energy source is a servo motor.

3. The heating element of claim 1 , wherein the at least one sheath slides over the at least one wire coil.

4. The heating element of claim 3 , wherein the at least one wire coil is at least one nichrome wire coil.

5. The heating element of claim 1 , wherein the at least one sheath comprises a wet winding.

6. The heating element of claim 5 , wherein the wet winding is a ceramic wet winding.

7. The heating element of claim 1 , wherein the energy source is radiative.

8. The heating element of claim 1 , further comprising:

a dielectric insulator between the at least one wire coil and the outer circumference of the 3D printer nozzle.

9. The heating element of claim 8 , wherein the dielectric insulator provides at least one of enhanced thermal coupling, redistribution of heat, and insulation from overheating.

10. The heating element of claim 1 , wherein the at least one wire coil comprises at least two wire coils.

11. The heating element of claim 10 , wherein the least two wire coils correspond directly to multiple heating zones.

12. The heating element of claim 10 , wherein the at least two wire coils are at least partially staggered along a longitudinal axis of the 3D printer nozzle.

13. The heating element of claim 1 , further comprising a resistance temperature detector (RTD) within the sheath and in contact with the 3D printer nozzle.

14. The heating element of claim 1 , wherein the energy source comprises at least one thermocouple.

15. The heating element of claim 1 , wherein the at least one sheath comprises one of a press fit, a plasma vapor deposit, a plating, and a rolled foil.

16. The heating element of claim 1 , wherein the resistance change in the at least one wire coil is indicative of a level of heating delivered to the 3D printer nozzle.

17. The heating element of claim 1 , wherein the energy source is alternating current.

18. The heating element of claim 1 , wherein the energy source is direct current.

19. The heating element of claim 1 , wherein the energy source comprises at least one of a Newtonian, a convective, and a radiative energy source.

20. The heating element of claim 1 , wherein the at least one wire coil is embedded in the at least one sheath.

21. The heating element of claim 1 , wherein the at least one sheath comprises a first sheath and a second sheath, and wherein the at least one wire coil comprises a first wire coil embedded within the first sheath and a second wire coil embedded within the second sheath.

22. The heating element of claim 1 , wherein the at least one sheath comprises a tube having a valve configured to increase or decrease a rate at which a gas is received or released to the nozzle.

23. A heating element for a 3D printer nozzle, comprising:

at least one sheath comprising a first inner diameter and a first outer diameter, the at least one sheath sized to engage around an outer circumference of the 3D printer nozzle;

at least one nichrome wire coil at least partially contacting the first inner diameter of the at least one sheath and communicative with an energy source capable of heating the at least one nichrome wire coil; and

at least one resistance sensor embedded in the at least one sheath configured to sense a resistance change in the at least one wire coil.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 2, 2025
From: JABIL INC.
To: 3D PRINT INNOVATIONS, LLC
Reel/Frame 072886/0877 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2023
From: MACNEISH, WILLIAM J.; GJOVIK, ERIK
To: JABIL INC.
Reel/Frame 065353/0419 →
Continuity (4)
Continuation 17479406 · Sep 20, 2021
Continuation 16859216 · Apr 27, 2020
Continuation 15723503 · Oct 3, 2017
Related Publication 20240059015A1 · Feb 22, 2024
References Cited (4)
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US 20120070523A1 · Swanson · 2012 [cited by examiner]
US 20130180980A1 · Parsche · 2013 [cited by examiner]
US 20140328963A1 · Mark · 2014 [cited by examiner]