公开(公告)号：DE69133094T2

公开(公告)日：2003-04-17

申请号：DE69133094

申请日：1991-10-30

Applicant: 3D SYSTEMS INC

Inventor： SNEAD E ,  SMALLEY R ,  COHEN ADAM L ,  ALLISON W ,  VORGITCH J ,  CHEN P ,  NGUYEN D ,  SCHMIDT A ,  EVANS E ,  FREED S ,  JACOBS F ,  VINSON A

IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  B29L9/00 ,  G06F17/50

公开(公告)号：DE68924952T2

公开(公告)日：1996-06-13

申请号：DE68924952

申请日：1989-09-26

Applicant: 3D SYSTEMS INC

Inventor： ALMQUIST THOMAS A ,  HULL CHARLES W ,  MODREK BORZO ,  SERKUCZEWSKI ANDRZEJ R ,  JACOBS PAUL F ,  LEWIS CHARLES W ,  LEWIS MARK A ,  LIRAN ABRAHAM ,  SMALLEY DENNIS R ,  COHEN ADAM L

IPC: B29C35/08 ,  B29C41/12 ,  B29C67/00 ,  B29K105/24 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12 ,  B29C39/42

Abstract: A stereolithography method and system for producing three-dimensional plastic objects by forming a plurality of thin layers of partially cured plastic material which are thin cross sections of the desired object. A layer of polymerizable resin is applied to a support surface and the excess is struck off, such as with a doctor blade, to form a smoothed layer. The smoothed layer is subjected to radiation in a predetermined pattern to form the cross-sectional layer into the desired shape. A plurality of layers are subsequently applied, leveled, then cured in the same manner to produce the desired three-dimensional object. Apparatus for measuring the level of the surface of a fluid is also provided. Variations in the level of fluid will be detected and may be used to drive a pump, diaphragm, or plunger in order to maintain the level of the fluid.

公开(公告)号：DE68924952D1

公开(公告)日：1996-01-11

申请号：DE68924952

申请日：1989-09-26

Applicant: 3D SYSTEMS INC

Inventor： ALMQUIST THOMAS A ,  HULL CHARLES W ,  MODREK BORZO ,  SERKUCZEWSKI ANDRZEJ R ,  JACOBS PAUL F ,  LEWIS CHARLES W ,  LEWIS MARK A ,  LIRAN ABRAHAM ,  SMALLEY DENNIS R ,  COHEN ADAM L

IPC: B29C35/08 ,  B29C41/12 ,  B29C67/00 ,  B29K105/24 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12 ,  B29C39/42

Abstract: A stereolithography method and system for producing three-dimensional plastic objects by forming a plurality of thin layers of partially cured plastic material which are thin cross sections of the desired object. A layer of polymerizable resin is applied to a support surface and the excess is struck off, such as with a doctor blade, to form a smoothed layer. The smoothed layer is subjected to radiation in a predetermined pattern to form the cross-sectional layer into the desired shape. A plurality of layers are subsequently applied, leveled, then cured in the same manner to produce the desired three-dimensional object. Apparatus for measuring the level of the surface of a fluid is also provided. Variations in the level of fluid will be detected and may be used to drive a pump, diaphragm, or plunger in order to maintain the level of the fluid.

公开(公告)号：CA2095225A1

公开(公告)日：1992-05-14

申请号：CA2095225

申请日：1991-10-30

Applicant: 3D SYSTEMS INC

Inventor： SNEAD DAVID E ,  SMALLEY DENNIS R ,  COHEN ADAM L ,  ALLISON JOSEPH W ,  VORGITCH THOMAS J ,  CHEN THOMAS P ,  NGUYEN HOP D ,  SCHMIDT KRIS A ,  EVANS HERBERT E JR ,  FREED RAYMOND S ,  JACOBS PAUL F ,  VINSON WAYNE A

IPC: B29C35/08 ,  G03F7/20 ,  B29C64/124 ,  B29C67/00 ,  B29K105/24 ,  B29L9/00 ,  G06F17/50 ,  G06F15/72

Abstract: 2095225 9208200 PCTABS00013 A method of and apparatus for slicing a three-dimensional object representation into a plurality of layer representations. The layer representations are subsequently used to form the object layer-by-layer from a solidifiable material by stereolithography (711). If not already provided in the object representation, a plurality of layer boundary representations are first formed, and then the boolean difference (17), of successive layer boundary representations are computed to derive boundaries of up and down-facing regions, enabling different cure parameters to be specified for these different regions. In another method, the depth of the curable material within the objet underlying a selected area element is determined and compared to the depht to the minimum solidification depth of the material. The area element is exposed to solidifying synergistic stimulation only if the depth of the material equals or exceeds the minimum solidification depth. A next layer is created over the first layer without curing the first layer, if the depth is less than the minimum solidification depth. Another method and apparatus (714) eliminates or substantially reduces curling effects in stereolithographically formed objects. Synergistic stimulation is applied to a curable material to form a three-dimensional object through the build up of successive layers.

公开(公告)号：DE69133094D1

公开(公告)日：2002-10-02

申请号：DE69133094

申请日：1991-10-30

Applicant: 3D SYSTEMS INC

Inventor： SNEAD E ,  SMALLEY R ,  COHEN ADAM L ,  ALLISON W ,  VORGITCH J ,  CHEN P ,  NGUYEN D ,  SCHMIDT A ,  EVANS E ,  FREED S ,  JACOBS F ,  VINSON A

IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  B29L9/00 ,  G06F17/50

公开(公告)号：AT222848T

公开(公告)日：2002-09-15

申请号：AT92900076

申请日：1991-10-30

Applicant: 3D SYSTEMS INC

Inventor： SNEAD DAVID E ,  SMALLEY DENIS R ,  COHEN ADAM L ,  ALLISON JOSEPH W ,  VORGITCH THOMAS J ,  CHEN THOMAS P ,  NGUYEN HOP D ,  SCHMIDT KRIS A ,  EVANS HERBERT E ,  FREED RAYMOND S ,  JACOBS PAUL F ,  VINSON WAYNE A

IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  B29L9/00 ,  G06F17/50

公开(公告)号：AT130793T

公开(公告)日：1995-12-15

申请号：AT89309762

申请日：1989-09-26

Applicant: 3D SYSTEMS INC

Inventor： ALMQUIST THOMAS A ,  HULL CHARLES W ,  MODREK BORZO ,  SERKUCZEWSKI ANDRZEJ R ,  JACOBS PAUL F ,  LEWIS CHARLES W ,  LEWIS MARK A ,  LIRAN ABRAHAM ,  SMALLEY DENNIS R ,  COHEN ADAM L

IPC: B29C35/08 ,  B29C41/12 ,  B29C67/00 ,  B29K105/24 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12 ,  B29C39/42

Abstract: A stereolithography method and system for producing three-dimensional plastic objects by forming a plurality of thin layers of partially cured plastic material which are thin cross sections of the desired object. A layer of polymerizable resin is applied to a support surface and the excess is struck off, such as with a doctor blade, to form a smoothed layer. The smoothed layer is subjected to radiation in a predetermined pattern to form the cross-sectional layer into the desired shape. A plurality of layers are subsequently applied, leveled, then cured in the same manner to produce the desired three-dimensional object. Apparatus for measuring the level of the surface of a fluid is also provided. Variations in the level of fluid will be detected and may be used to drive a pump, diaphragm, or plunger in order to maintain the level of the fluid.

公开(公告)号：HK1002908A1

公开(公告)日：1998-09-25

申请号：HK98100602

申请日：1998-01-22

Applicant: 3D SYSTEMS INC

Inventor： ALMQUIST THOMAS A ,  HULL CHARLES W ,  MODREK BORZO ,  SERKUCZEWSKI ANDRZEJ R ,  JACOBS PAUL F ,  LEWIS CHARLES W ,  LEWIS MARK A ,  LIRAN ABRAHAM ,  SMALLEY DENNIS R ,  COHEN ADAM L

IPC: B29C35/08 ,  B29C41/12 ,  B29C67/00 ,  B29K105/24 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12 ,  B29C

Abstract: A stereolithography method and system for producing three-dimensional plastic objects by forming a plurality of thin layers of partially cured plastic material which are thin cross sections of the desired object. A layer of polymerizable resin is applied to a support surface and the excess is struck off, such as with a doctor blade, to form a smoothed layer. The smoothed layer is subjected to radiation in a predetermined pattern to form the cross-sectional layer into the desired shape. A plurality of layers are subsequently applied, leveled, then cured in the same manner to produce the desired three-dimensional object. Apparatus for measuring the level of the surface of a fluid is also provided. Variations in the level of fluid will be detected and may be used to drive a pump, diaphragm, or plunger in order to maintain the level of the fluid.

公开(公告)号：DE555369T1

公开(公告)日：1996-10-10

申请号：DE92900076

申请日：1991-10-30

Applicant: 3D SYSTEMS INC

Inventor： SNEAD DAVID ,  SMALLEY DENIS ,  COHEN ADAM L ,  ALLISON JOSEPH ,  VORGITCH THOMAS ,  CHEN THOMAS ,  NGUYEN HOP ,  SCHMIDT KRIS ,  EVANS HERBERT ,  FREED RAYMOND ,  JACOBS PAUL ,  VINSON WAYNE

IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  B29L9/00 ,  G06F17/50 ,  B29C39/42 ,  G06F17/30