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US 4,295,810 AGranted
Apparatus for insulating building blocks
AssigneeVeit Dennert KG Baustoffbetriebe
InventorsHeinz Dennert, Hans V. Dennert
Life of this patent
Estimating the term…
Abstract
A building block having at least one chamber therein which is filled with a foamed plastic material consisting of particles interconnected at their surfaces to form gas-permeable interstices. The block is formed by filling the chamber with a loose fill of the foamed plastic material and then fusing the particles to each other by blowing hot gas through an injection lance inserted in the fill.
Claims11
Apparatus for producing building blocks comprising
- conveying means for transporting building blocks each having at least one hollow chamber therein,
- a filling station for filling the chambers of said building blocks with particles of preformed thermoplastic synthetic material,
- a fusing station for fusing the surfaces of said particles of thermoplastic synthetic material together, and
- synchronizing means for controlling the movements of said conveying means, filling station and fusing station to fill the chambers of said building blocks with said particles of thermoplastic synthetic material and then fuse said particles together.
1 more element
Dependencies are inferred from the claim text.