Gary J Reynolds

US Patent:

6532100, Mar 11, 2003

Filed:

Aug 4, 1999

Appl. No.:

09/368342

Inventors:

Jouni P. Partanen - Los Angeles CA
Xingkun Wu - Painted Post NY
Gary Reynolds - Santa Clarita CA
William F. Hug - Pasadena CA

Assignee:

3D Systems, Inc. - Valencia CA

International Classification:

G02F 135

US Classification:

359326, 372 21

Abstract:

Solid state lasers that use non-linear optical crystals to generate frequency tripled or quadrupled output in the ultraviolet have low lifetimes due to damage to the face of the non-linear crystal through which the ultraviolet signal exits. To prevent this damage, the tripling or quadrupling crystal is provided within a controlled environment that is maintained substantially free from contaminants such as silicon-bearing and organic compounds. The tripling or quadrupling crystal is enclosed within a tubular chamber with windows on the ends of the tube that provide optical access to the entrance and exit faces of the tripling or quadrupling crystal. All heating elements and alignment elements for the crystal are outside of the chamber. Because the crystal is stored within the hermetically sealed chamber, contaminants are not available within the environment of the crystal that could interact with the energetic photons of the ultraviolet output of the frequency multiplied solid state laser. The windows and walls of the chamber are preferably made of materials that can be cleaned effectively, such as sapphire or quartz for the windows and stainless steel for the walls and flanges of the chamber.

US Patent:

D528425, Sep 19, 2006

Filed:

Aug 23, 2005

Appl. No.:

29/236823

Inventors:

Stacie L. Van Dorin - Saugus CA, US
Gary L. Reynolds - Santa Clarita CA, US

Assignee:

3D Systems, Inc. - Valencia CA

International Classification:

0901

US Classification:

D 9527, D9524

US Patent:

7621733, Nov 24, 2009

Filed:

Sep 30, 2005

Appl. No.:

11/240819

Inventors:

Gary Lee Reynolds - Santa Clarita CA, US
Don Frederick Hunter - Corvallis OR, US

Assignee:

3D Systems, Inc. - Rock Hill SC

International Classification:

B29C 35/08
B29C 41/02
B29C 41/52

US Classification:

425135, 4251744

Abstract:

A stereolithography apparatus having a resin vat with resupply containers in one-way flow communication and a leveling container in two-way flow communication, an automatic offload cart to remove and replace build support platforms, an elevator assembly for supporting and releasably retaining a build platform removably attached to the stereolithography apparatus frame such that elevator forks supporting the build platform can be released into the vat and removed from the stereolithography apparatus with the vat, and a recoater assembly and recoater blade for mapping the resin surface in the vat and applying a fresh coating of resin to a cross-section being built in the vat.

US Patent:

20100038268, Feb 18, 2010

Filed:

Oct 9, 2009

Appl. No.:

12/576954

Inventors:

Gary Lee Reynolds - Santa Clarita CA, US
Don Frederick Hunter - Corvallis OR, US

International Classification:

B65D 69/00
F17D 1/00

US Classification:

206232, 425135, 137 1

Abstract:

A stereolithography apparatus having a resin vat with resupply containers in one-way flow communication and a leveling container in two-way flow communication, an automatic offload cart to remove and replace build support platforms, an elevator assembly for supporting and releasably retaining a build platform removably attached to the stereolithography apparatus frame such that elevator forks supporting the build platform can be released into the vat and removed from the stereolithography apparatus with the vat, and a recoater assembly and recoater blade for mapping the resin surface in the vat and applying a fresh coating of resin to a cross-section being built in the vat.