公开(公告)号：WO2019017956A1

公开(公告)日：2019-01-24

申请号：PCT/US2017/043091

申请日：2017-07-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： SCHALK, Wesley R. ,  ROMAN, Justin M. ,  WEST, Randall ,  WINBURNE, Robert Lawrence

IPC: B29C64/307 ,  B29C64/357 ,  B33Y10/00 ,  B33Y40/00 ,  B29B17/00 ,  B29C64/30

Abstract: A build material recovery system for a three-dimensional (3D) printer can include a selective solidification device to create a 3D object using build material, a build processing device to separate the 3D object from unfused build material, a material separating and conditioning device to condition the unfused build material, and a material storage device to store the conditioned build material.

公开(公告)号：WO2019005040A1

公开(公告)日：2019-01-03

申请号：PCT/US2017/039747

申请日：2017-06-28

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： GROENENBOOM, Mark ,  WEST, Randall ,  REGNIER, Tait A. ,  WINBURNE, Robert Lawrence ,  BINGHAM, Jeffrey G.

IPC: B29C64/245 ,  B66B7/00 ,  B66F3/08 ,  B33Y30/00

CPC classification number: B33Y30/00 ,  B29C64/245 ,  B66F3/08

Abstract: In one example, a platform lift includes a rotationally stationary leadscrew to support a platform, a rotatable nut to drive the leadscrew up and down through a range of motion, a first spring to apply a continuous downward force to the leadscrew throughout the range of motion, and a second spring to apply a continuous upward force to the leadscrew throughout the range of motion.

公开(公告)号：WO2020068101A1

公开(公告)日：2020-04-02

申请号：PCT/US2018/053314

申请日：2018-09-28

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： WEST, Randall ,  ROMAN, Justin M. ,  LAWS, Alexander David ,  BERGESON, Jeffrey ,  HULICK, Kevin

IPC: B29C64/329 ,  B29C64/393 ,  B29C64/141 ,  B33Y30/00 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y50/02

Abstract: A 3D printing system comprises a pressure system to provide a negative pressure and a hopper having a first opening to receive powder to be used for printing, wherein the powder is received in an open state of the first opening. The hopper has a second opening to guide air from outside the hopper to inside the hopper and has a third opening connected to the pressure system so as to provide for a negative pressure inside the hopper, the negative pressure to overcompensate for the air receive through the second opening such that a pressure being lower when compared to an ambient pressure of the hopper is generated inside the hopper.

公开(公告)号：WO2019009908A1

公开(公告)日：2019-01-10

申请号：PCT/US2017/040939

申请日：2017-07-06

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： SCHMALE, Joshua ,  WINBURNE, Robert Lawrence ,  WEST, Randall ,  REGNIER, Tait A.

IPC: B29C64/205 ,  B29C64/245 ,  B29C64/153

Abstract: A three-dimensional printing system may include a build platform, the build platform including at least one hole defined through the build platform, a diffuser plate placed below the at least one hole to maintain an amount of build material between a lower surface of the build platform and an upper surface of the diffuser plate, and a flow channel defined around the diffuser plate and sealing the diffuser plate from atmosphere.

公开(公告)号：WO2019022729A1

公开(公告)日：2019-01-31

申请号：PCT/US2017/043878

申请日：2017-07-26

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： REGNIER, Tait A. ,  GROENENBOOM, Mark ,  WINBURNE, Robert Lawrence ,  WEST, Randall ,  SCHMALE, Joshua

IPC: B29C64/255 ,  B33Y30/00 ,  B29C64/245

CPC classification number: B29C64/255 ,  B29C64/245 ,  B33Y30/00

Abstract: A build unit may include a build chamber, at least two datum apertures defined in at least two opposite sides of the build unit, and at least two alignment posts that seat within the datum apertures to couple the lift system to the build chamber, and to align the lift system in a first coordinate direction relative to the build chamber.

公开(公告)号：WO2019017955A1

公开(公告)日：2019-01-24

申请号：PCT/US2017/043079

申请日：2017-07-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： WEST, Randall ,  LAWS, Alexander David ,  WINBURNE, Robert Lawrence ,  KANG, Samantha

IPC: B29C64/10 ,  B29C64/357 ,  B29C64/20 ,  B33Y40/00

CPC classification number: B29C64/357 ,  B29C64/153 ,  B29C64/165 ,  B29C64/20 ,  B33Y40/00

Abstract: In some examples, a build material recycling device of a three-dimensional (3D) printer can include an upper chamber including an inlet and a material separator coupled to the inlet, a classifier coupled to the upper chamber, and a lower chamber coupled to the classifier, where the classifier is located between the upper chamber and the lower chamber.

公开(公告)号：WO2019017953A1

公开(公告)日：2019-01-24

申请号：PCT/US2017/043068

申请日：2017-07-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： WINBURNE, Robert Lawrence ,  WEST, Randall ,  WANG, Nicholas ,  SOSNOWSKI, Luke P.

IPC: B29C64/10 ,  B29C64/357 ,  B29C64/20 ,  B33Y40/00

Abstract: In some examples, a build material recycling system of a three-dimensional (3D) printer can include a build material transport system of the 3D printer, a build material recycling device of the 3D printer that includes a fluidizing membrane and is connected to the build material transport system, and a recycled build material hopper of the 3D printer connected, via the build material transport system, to the build material recycling device.

公开(公告)号：EP3595870A1

公开(公告)日：2020-01-22

申请号：EP17916808.3

申请日：2017-07-06

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： SCHMALE, Joshua ,  WINBURNE, Robert Lawrence ,  WEST, Randall ,  REGNIER, Tait A.

IPC: B29C64/205 ,  B29C64/245 ,  B29C64/153

公开(公告)号：EP3609678A1

公开(公告)日：2020-02-19

申请号：EP17918443.7

申请日：2017-07-20

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： WEST, Randall ,  LAWS, Alexander David ,  WINBURNE, Robert Lawrence ,  KANG, Samantha

IPC: B29C64/10 ,  B29C64/357 ,  B29C64/20 ,  B33Y40/00

公开(公告)号：EP3634718A1

公开(公告)日：2020-04-15

申请号：EP17918119.3

申请日：2017-07-20

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： WINBURNE, Robert Lawrence ,  WEST, Randall ,  WANG, Nicholas ,  SOSNOWSKI, Luke P.

IPC: B29C64/10 ,  B29C64/357 ,  B29C64/20 ,  B33Y40/00