公开(公告)号：US20210206086A1

公开(公告)日：2021-07-08

申请号：US16075623

申请日：2017-07-14

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

Inventor： David R. OTIS, Jr.

IPC: B29C64/329 ,  B29C64/393 ,  B33Y30/00 ,  B33Y40/00

Abstract: In some examples, a flow conduit transports a material between locations in a three-dimensional (3D) printing system. A controllable valve controls gas communication to the flow conduit. A pressure chamber receives an increase in pressure while the controllable valve is in a restricted flow position, and the controllable valve when actuated to an open position directs a burst of gas at an elevated pressure built up in the pressure chamber to the flow conduit to disturb the material in the flow conduit.

公开(公告)号：US20210178688A1

公开(公告)日：2021-06-17

申请号：US16076222

申请日：2017-07-28

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

Inventor： David R. OTIS, Jr. ,  Kevin E. SWIER ,  Jeffrey L. THIELMAN

IPC: B29C64/321 ,  B29C64/357 ,  B65G53/60

Abstract: A three-dimensional (3D) printer and method having a pneumatic conveyance system (PCS) to transport build material to a vessel of the 3D printer. A feeder coupled to the vessel regulates the discharge flow of build material from the vessel. A sealing control coupled to the feeder reduces air inflow.

公开(公告)号：US20210197471A1

公开(公告)日：2021-07-01

申请号：US16077057

申请日：2017-07-28

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

Inventor： Wesley R. SCHALK ,  Kris M. ENGLISH ,  Justin M. ROMAN ,  Kevin E. SWIER ,  David R. OTIS, Jr.

IPC: B29C64/321 ,  B29C64/259 ,  B29C64/357 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: A 3D printer and method include a cartridge receiver to hold a material cartridge that accepts build material into the material cartridge from the 3D printer and makes build material available from the material cartridge. A first conveying system of the 3D printer transports build material for the 3D printing. A second conveying system of the 3D printer facilitates recovery of excess build material from the 3D printing.

公开(公告)号：US20210178406A1

公开(公告)日：2021-06-17

申请号：US16077085

申请日：2017-07-27

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

Inventor： Steve RINGWALD ,  David R. OTIS, Jr.

IPC: B04C5/13 ,  B04C5/081 ,  B04C11/00 ,  B29C64/321 ,  B29C64/357 ,  B65G53/60

Abstract: According to examples, a 3D printing system may include a feed line to receive build material particles from a material bin, an air pressure generator to generate airflow inside the feedline to move the build material particles through the feedline, and a cyclone separator to receive the airflow and the build material particles from the feed line and to separate the build material particles from the airflow. The cyclone separator may include a chamber wall, a build material particle discharge opening, and a tapered wall connecting the chamber wall and the build material particle discharge opening. In addition, a ratio between a diameter of the chamber and a diameter of the discharge opening may be between about 1.5 and about 4.0.

公开(公告)号：US20210197449A1

公开(公告)日：2021-07-01

申请号：US16075675

申请日：2017-07-31

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

Inventor： David R. OTIS, Jr. ,  Kevin E. SWIER ,  Justin M. ROMAN ,  Wesley R. SCHALK

IPC: B29C64/153 ,  B29C64/329 ,  B29C64/336 ,  B29C64/357 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: Example implementations relate to different mixtures of build materials deliverable during a three dimensional (3D) print operation. In some examples, a 3D print apparatus may include a delivery hopper to deliver build material to a print zone of the 3D print apparatus and a plurality of build material hoppers to which the delivery hopper is connected for receipt of at least one of a corresponding plurality of build materials. A controller of the 3D print apparatus may direct that variable proportions of a first build material relative to a second build material are receivable by the delivery hopper from the plurality of build material hoppers during the 3D print operation, where different mixtures of the variable proportions of the first build material and the second build material are deliverable to the delivery hopper during the 3D print operation.

公开(公告)号：US20190184641A1

公开(公告)日：2019-06-20

申请号：US16075919

申请日：2017-07-28

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

Inventor： Kevin E. SWIER ,  David R. OTIS, Jr.

IPC: B29C64/314 ,  B29C64/329 ,  B29C64/336

CPC classification number: B29C64/314 ,  B29C64/321 ,  B29C64/329 ,  B29C64/336 ,  B33Y30/00 ,  B33Y40/00

Abstract: A three-dimensional (3D) printer and method including a first material vessel to discharge first material through a first feeder as build material, and a second material vessel to discharge second material through a second feeder as build material.