Passive z-axis alignment
US-9481133-B2 · Nov 1, 2016 · US
Extruder feed system
US10505213B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10505213-B2 |
| Application number | US-201815894101-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 12, 2018 |
| Priority date | Aug 7, 2013 |
| Publication date | Dec 10, 2019 |
| Grant date | Dec 10, 2019 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
Extruder feed system. The system includes a pair of spaced-apart, internally and oppositely threaded rotatable elements for receiving and engaging a plastic filament material. An electric motor rotates the rotatable elements in opposite directions thereby to drive the filament into a liquefier chamber for subsequent discharge through a nozzle. The system provides very accurate layer-by-layer build up.
First claim
Opening claim text (preview).
What is claimed is: 1. Extruder feed system comprising: a pair of spaced-apart, internally and oppositely threaded rotatable elements for receiving and engaging a filament material; and a motor for rotating the rotatable elements in opposite directions thereby to drive the filament into a liquefier chamber for subsequent discharge through a nozzle. 2. The system of claim 1 further including a gear train driven by the motor to rotate the rotatable elements in opposite directions. 3. The system of claim 1 wherein the motor is a stepper motor. 4. The system of claim 1 wherein the motor is a DC motor. 5. The system of claim 2 wherein the gear train includes a beveled gear driven by the motor. 6. The system of claim 1 wherein the rotatable elements are internally threaded hex nuts. 7. The system of claim 1 further including a control loop for controlling power of the motor thereby to control the filament material extrusion rate. 8. The system of claim 1 wherein the motor is a pneumatic motor, internal combustion engine or an AC motor. 9. The system of claim 2 wherein the gear train includes a belt or cable driven with pulleys.
Assignees
Inventors
Classifications
Forwarding filamentary material (stretch-spinning methods D01D5/12; drawing or drafting rovings or the like D01H5/00) · CPC title
using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title
Heating · CPC title
Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title
Velocity · CPC title
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Frequently asked questions
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- What does patent US10505213B2 cover?
- Extruder feed system. The system includes a pair of spaced-apart, internally and oppositely threaded rotatable elements for receiving and engaging a plastic filament material. An electric motor rotates the rotatable elements in opposite directions thereby to drive the filament into a liquefier chamber for subsequent discharge through a nozzle. The system provides very accurate layer-by-layer bu…
- Who is the assignee on this patent?
- Massachusetts Inst Technology
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0564. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 10 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).