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:
Oct. 05, 2010
Filed:
May. 09, 2005
Jouni P. Partanen, Santa Monica, CA (US);
Ning Zheng, Santa Clarita, CA (US);
Raymond J. Bishop, Santa Clarita, CA (US);
Jouni P. Partanen, Santa Monica, CA (US);
Ning Zheng, Santa Clarita, CA (US);
Raymond J. Bishop, Santa Clarita, CA (US);
3D Systems, Inc., Rock Hill, SC (US);
Abstract
An inert gas dispenser for mounting to a process equipment functional window is provided to dispense an inert gas in a laminar flow at an effective velocity across the exposed surface to form a curtain of inert gas across the exposed surface to prevent a build-up of chemical by-product from the powder material during laser sintering. The gas flow rate is characteristic of a flow geometry having a Reynolds number below the turbulent range. The diffuser is used in a laser sintering system.