Patent ID: 7942658

Claim:
A system for forming lightweight concrete building units, comprising: at least one mold configured for receiving a batch of a lightweight cement slurry therein and for forming at least one building unit; an ingredient measuring apparatus configured for measuring each of a plurality of ingredients to form the batch; a cement slurry mixing apparatus configured for receiving the plurality of ingredients from the ingredient measuring apparatus, for mixing the plurality of ingredients into the batch, and for pouring the batch into at least one mold, wherein said cement slurry mixing device comprises a vessel rotatably mounted proximate a longitudinal axis thereof to a support frame and including a first drive motor coupled thereto for rotating said vessel to dump a batch contained therein and a second drive motor coupled to said vessel for rotating mixing paddles within said vessel and mixing the batch contained therein; and a slurry delivery apparatus configured for transporting said cement slurry mixing apparatus to a position proximate said at least one mold so that the batch slurry can be delivered from said cement slurry mixing apparatus to said at least one mold.