Invention Grant
- Patent Title: Concrete delivery system
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Application No.: US15280967Application Date: 2016-09-29
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Publication No.: US10307959B2Publication Date: 2019-06-04
- Inventor: Gerald R. Northrup , William Jacob Wagner , Megan A. Kreiger , Bruce A. MacAllister , Michael Patrick Case , Ghassan Al-Chaar
- Applicant: The United States of America, as represented by the Secretary of the Army
- Applicant Address: US DC Washington
- Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY
- Current Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY
- Current Assignee Address: US DC Washington
- Agent Brian C. Jones
- Main IPC: B28B1/00
- IPC: B28B1/00 ; B29C67/00 ; B29C64/165 ; B33Y30/00 ; B29C64/209 ; E04G21/00 ; B29C64/343 ; B29C64/321

Abstract:
The present invention is a three-dimensional printing system which is capable of printing with multiple different printing materials, including homogenous materials, such as cement paste, or heterogeneous materials, such as concrete. Functionality is accomplished by novel, critical structures including but not limited to a movable gate capable of controlling the flow of printing materials without clogging or becoming otherwise damaged. The system has a print head that discharges printing material through a discharge aperture. The movable gate is rotatably connected to the print head, allowing it to cover the discharge aperture and cut off the flow of printing material when actuated and rotated into position. Certain embodiments also include hose positioning systems to prevent hoses delivering printing material from disconnecting or damaging the printed structure.
Public/Granted literature
- US20180086008A1 CONCRETE DELIVERY SYSTEM Public/Granted day:2018-03-29
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