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US 6,387,308 B1Granted
Simplified apparatus for forming building blocks
AssigneeHydraforms Developments (Pty) Ltd.
InventorJoachim Kofahl
Life of this patent
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Abstract
Apparatus for forming building blocks includes an upright compression chamber with an upper end which serves both as an inlet and an outlet. A sliding gate closes the inlet/output. A soil/cement mixture is loaded into the upper end of the compressing chamber, the gate is slide shut, and a ram then compresses the mixture against the gate. The gate is opened while the ram is still under pressure, smoothing the upper end of the block, and allowing it to be ejected through the common inlet/outlet.
Claims7
A method for compressing particulate material comprising:
- delivering particulate material through an upper opening into a compression chamber;
- closing a gate over the upper opening;
- applying sufficient force to the particulate material to compress the material into a block within the compression chamber;
- and
- while maintaining the force against the particulate material, sliding the gate across an upper surface of the block to smooth said upper surface.
2 more elements
Dependencies are inferred from the claim text.