Electric heating – Metal heating – By arc
Reexamination Certificate
2006-04-25
2006-04-25
Evans, Geoffrey S. (Department: 1725)
Electric heating
Metal heating
By arc
C219S121850
Reexamination Certificate
active
07034246
ABSTRACT:
A reduced feed mechanism for a selective laser sintering machine. The machine includes a powder feed source and a first feed piston to push powder from the source. The mechanism includes a spacer with an interior volume, a second piston, and a seal for the second piston. The spacer fits into the source. The first piston moves the second piston and causes powder to move from the interior volume. Preferably, the pistons are coupled by a floating coupling. An access panel may allow a user to view the coupling. The mechanism may include a ballast which can fit inside the source for the first piston. Preferably, the spacer reduces the volume of powder by approximately 70%. An infrared sensor may also be positioned to view the reduced amount of powder. Methods of selective laser sintering are also provided.
REFERENCES:
patent: 5837960 (1998-11-01), Lewis et al.
patent: 6046426 (2000-04-01), Jeantette et al.
patent: 6531086 (2003-03-01), Larsson
patent: 6589471 (2003-07-01), Khoshnevis
patent: 6621039 (2003-09-01), Wang et al.
patent: 6815636 (2004-11-01), Chung et al.
patent: 6930278 (2005-08-01), Chung et al.
patent: 2004/0084814 (2004-05-01), Boyd et al.
3D Systems, Inc., Accura DuraForm PA and GF Material, specification sheet, Feb. 2004, 2 pages, Valencia, CA.
3D Systems, Inc., 3D Systems Products Page, viewed on Aug. 5, 2004, 1 Internet page, Copyright 1997-2003.
3D Systems, Inc., 3D Systems Application Solutions, viewed on Aug. 5, 2004, 2 Internet pages, Copyright 1997-2003.
3D Systems, Inc., News Release, 3D Systems Providing Advanced Digital Manufacturing System to New Boeing Venture, 4 pages, Sep. 5, 2002, Valencia, CA.
Declaration of Steven C. Low Under 37 C.F.R. §132; Jan. 19, 2005; 2 pages.
Low Steven C.
Muylaert Neal W.
Evans Geoffrey S.
The Boeing Company
Thompson & Coburn LLP
LandOfFree
Selective laser sintering reduced volume feed mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Selective laser sintering reduced volume feed mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective laser sintering reduced volume feed mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3538543