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US 6,984,118 B2Granted
Method and apparatus for the production of tubes from concrete mix
AssigneeInstitut fur Fertigteiltechnik UND
InventorsHelmut Kuch, Jorg-Henry Schwabe, Jurgen Martin, Torsten Benzin
Life of this patent
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Abstract
The invention concerns a procedure for the production of tubes from concrete mix, whereby the concrete mix is filled into a shaping device, for the purpose of shaping, where it is condensed with a tool. The invention should enable an effective and fast production of concrete tubes with high quality regarding the uniformity of the material characteristics. In such a procedure the concrete mix is condensed in an interspace between two parts of a tool that rotate relative to each other.
Claims26
A shaping device for the production of tubes from concrete mix, comprising:
- a sheathing form to shape an outer contour of a tube;
- and
- a multipart tool connected with at least one drive device for condensation of the concrete mix that is filled in the shaping device, for the shaping of an inner contour of the tube, the multipart tool including a first part of the tool and a second part of the tool rotationally driven countermoving to each other, whereby an interspace for the transfer and condensation of the concrete mix exists between a first work area section of the first part of the tool and a first work area section of the second part of the tool, a second work area section of the first part of the tool having the shape of a first outer cylinder around the axis of rotation of the first part of the tool for the shaping of the inner contour.
Dependencies are inferred from the claim text.