The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2022
Filed:
Mar. 19, 2020
Trumpf Laser—und Systemtechnik Gmbh, Ditzingen, DE;
Markus Pieger, Wendlingen am Neckar, DE;
TRUMPF Laser—und Systemtechnik GmbH, Ditzingen, DE;
Abstract
Building cylinders, for use in machines for the layer-by-layer production of 3D objects by sintering or melting powdered material by a high-energy beam, and having a main body and a piston part movable on an inner side of the main body along a cylindrical axis, are disclosed. The piston part has a base element for the growth of a 3D object, and a powder seal bearing against the inner side of the main body for sealing the powdered material. The piston part has a seal carrier on which the powder seal is mounted, and an insulator, e.g., a circumferential insulation ring, mounted on the seal carrier. The base element is mounted on the insulator and is arranged at a distance from the seal carrier and from the powder seal.