公开(公告)号：US20210370603A1

公开(公告)日：2021-12-02

申请号：US16608475

申请日：2018-07-18

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

Inventor： Theodore J. Conley ,  Robert Lawrence Winburne

IPC: B29C64/329 ,  B29C64/245

Abstract: Examples of a fluid flow device for an additive manufacturing printer are disclosed. In an implementation, the fluid flow device includes a body including an inlet, an outlet, a first wall, a second wall opposite the first wall, and a fluid flow passage in fluid communication with the inlet and outlet. In addition, the fluid flow device includes a port into the fluid flow passage, through the first wall along an axis, the port to communicate with a chamber that receives powder during a printing operation. Further, the fluid flow device includes a plate within the fluid flow passage and axially spaced between the port and the second wall such that the fluid flow passage is divided into a first passage between the port and the plate and a second passage between the plate and the second wall, the first passage to receive powder from the chamber through the port.

公开(公告)号：US11046102B2

公开(公告)日：2021-06-29

申请号：US16499255

申请日：2017-10-20

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

Inventor： John J. Cantrell ,  Keith Jariabka ,  Theodore J. Conley ,  William S. Osbome

IPC: B41L27/04 ,  B41J2/175

Abstract: An example ink tank includes an ink tank and a cap assembly attached to the ink tank with a preloaded hinge. The hinge rotates the cap assembly from a closed position to an open position when the cap assembly is unlatched. The cap assembly includes a bung to seal the ink tank during a partial rotation of the cap assembly when the cap assembly is unlatched. The ink tank also includes spring-loaded linkage connected to a valve in the ink tank. An effector extending from the cap assembly engages the spring-loaded linkage when the cap assembly is latched and disengages from the spring-loaded linkage after the cap assembly is unlatched. The spring-loaded linkage opens the valve when engaged with the effector, and closes the valve when disengaged from the effector, while the bung maintains a tank seal until the internal valve is closed.

公开(公告)号：US20200238742A1

公开(公告)日：2020-07-30

申请号：US16499255

申请日：2017-10-20

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

Inventor： John J. Cantrell ,  Keith Jariabka ,  Theodore J. Conley ,  William S. Osbome

IPC: B41L27/04 ,  B65D43/16 ,  B41J2/175

Abstract: An example ink tank includes an ink tank and a cap assembly attached to the ink tank with a preloaded hinge. The hinge rotates the cap assembly from a closed position to an open position when the cap assembly is unlatched. The cap assembly includes a bung to seal the ink tank during a partial rotation of the cap assembly when the cap assembly is unlatched. The ink tank also includes spring-loaded linkage connected to a valve in the ink tank. An effector extending from the cap assembly engages the spring-loaded linkage when the cap assembly is latched and disengages from the spring-loaded linkage after the cap assembly is unlatched. The spring-loaded linkage opens the valve when engaged with the effector, and closes the valve when disengaged from the effector, while the bung maintains a tank seal until the internal valve is closed.

公开(公告)号：US11220111B2

公开(公告)日：2022-01-11

申请号：US16499256

申请日：2017-10-20

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

Inventor： John J. Cantrell ,  Keith Jariabka ,  Theodore J. Conley ,  William S. Osborne

IPC: B41J2/175

Abstract: An example ink tank includes a cap with a preloaded hinge that biases the cap to a fully opened position when the cap is unlatched. The cap in the fully opened position interferes with and prevents the closure of a door that provides access to the ink tank. The door includes a sensor that locks out the print function when the door is open, effecting a printer lockout when the cap of the ink tank is opened for filling.

公开(公告)号：US20210291536A1

公开(公告)日：2021-09-23

申请号：US16499256

申请日：2017-10-20

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

Inventor： John J. Cantrell ,  Keith Jariabka ,  Theodore J. Conley ,  William S. Osborne

IPC: B41J2/175

Abstract: An example ink tank includes a cap with a preloaded hinge that biases the cap to a fully opened position when the cap is unlatched. The cap in the fully opened position interferes with and prevents the closure of a door that provides access to the ink tank. The door includes a sensor that locks out the print function when the door is open, effecting a printer lockout when the cap of the ink tank is opened for filling.