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Found results for
 patents
1.
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DEVICE AND METHOD FOR ADDITIVE MANUFACTURING UNDER PROTECTIVE GAS
| Application Number |
18002317 |
| Status |
Pending |
| Filing Date |
2021-06-02 |
| First Publication Date |
2023-08-03 |
| Owner |
MESSER GROUP GMBH (Germany)
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| Inventor |
- Kampffmeyer, Dirk
- Hildebrandt, Bernd
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Abstract
The invention relates to a device for the additive manufacturing of workpieces under protective gas, which device is provided with a manufacturing chamber designed as a pressure chamber, said manufacturing chamber being fluidically connected to a pressure container via a gas extraction line, which is provided with a vacuum pump, and via a gas return line. After the manufacturing of a first workpiece, the protective gas present in the manufacturing chamber is evacuated, temporarily stored in the pressure container and, prior to the manufacturing of a second workpiece, is introduced into the manufacturing chamber.
IPC Classes ?
- B22F 12/70 - Gas flow means
- B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
- B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
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2.
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DEVICE AND METHOD FOR PRODUCING AND TRANSPORTING DRY ICE PELLETS
| Application Number |
17770342 |
| Status |
Pending |
| Filing Date |
2020-10-22 |
| First Publication Date |
2022-12-01 |
| Owner |
MESSER GROUP GMBH (Germany)
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| Inventor |
Claeys, Jean-Claude
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Abstract
A device for producing dry ice pellets comprises a pressing cylinder, into which an inlet opening for feeding liquid carbon dioxide leads and which is equipped with a die, which has one or more openings, and with a piston, which is longitudinally movable in the pressing cylinder. Liquid carbon dioxide is fed to the pressing cylinder, is expanded at the inlet opening, is at least partially converted into carbon dioxide snow and is pressed against and through the die by the movement of the piston. The die is in the form of a cylindrical body that can be connected to the pressing cylinder and is equipped with feed-throughs, which are oriented parallel to a longitudinal axis of the die and are dimensioned in such a way that the length and the diameters of the feed-throughs correspond to the length and the diameters of the dry ice pellets to be produced.
IPC Classes ?
- B01J 2/20 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
- C01B 32/55 - Solidifying
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