Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
A method for producing lightweight constructional plates by casting a mixture of filling material and a binder into a mold, comprising the steps of continuously centrifuging a cement and water to form a liquid cement binder; continuously feeding the centrifuged liquid cement binder and filling material to a slowly rotating drum mixer to form said mixture; continuously supplying the mixture from the drum mixer to a mold while moving the mold horizontally at a speed coordinated with the rate of mixture supply to the mold to fill the mold progressively to a uniform height, while progressively subjecting only the mixture in the mold to vibration and to leveling to a uniform height; supplying the mixture to be molded at a rate coordinated with the rate of mold movement; thereafter hardening and curing the cast mixture in the mold; then removing the hardened and cured constructional plate from the mold; soaking a glass fiber mat in liquid-binding means; drying the soaked glass fiber mat; and placing the glass fiber mat in the mold before the mold is supplied with said mixture and while said liquid binding means has not yet set completely.
Claim 2
Dependent Claim
26 words
A method as claimed in claim 2, including the step of rolling a similarly prepared glass fiber mat onto the exposed surface of the cast mixture.
Claim 3
Dependent Claim
21 words
A method as claimed in claim 2, in which said liquid-binding means is a liquid cement having liquid rubber added thereto.
Claim 4
Independent Claim
168 words
A method for producing lightweight constructional plates by casting a mixture of filling material and a binder into a mold, comprising the steps of continuously centrifuging a cement and water to form a liquid cement binder; continuously feeding the centrifuged liquid cement binder and filling material to a slowly rotating drum mixer to form said mixture; continuously supplying the mixture from the drum mixer to a mold while moving the mold horizontally at a speed coordinated with the rate of mixture supply to the mold to fill the mold progressively to a uniform height, while progressively subjecting only the mixture in the mold to vibration and to leveling to a uniform height; supplying the mixture to be molded at a rate coordinated with the rate of mold movement; thereafter hardening and curing the cast mixture in the mold; then removing the hardened and cured constructional plate from the mold; and inserting at least one reinforcing grid into the mold as the mold is being filled with said mixture.
Claim 5
Dependent Claim
233 words
Apparatus for producing lightweight constructional plates by casting a mixture of filling material and a binder into a mold, comprising, in combination, a stationary mixing and delivery device arranged to have continuously supplied thereto a liquid cement binder and filling materials for mixing therein; at least one mold movable past said stationary mixing and delivery device for progressively filling the mold with the mixture discharged from said device; means operable to move said mold past said mixing and delivery device horizontally at a speed coordinated with the rate of mixture supply to the mold to fill the mold progressively to a uniform height; said mixing and delivery device being a slowly rotating drum on an inclined axis; conveyor means operable to supply filling material continuously to one end of said drum; a centrifuge operable to centrifuge a cement and water to form a liquid cement binder and to supply the liquid cement binder continuously to said one end of said drum; a mixture stripping vibrator immediately downstream of said mixing and delivery device and operable to level the mixture in a mold and to subject only the mixture in the mold to vibration; and a supply device adjacent said mixing and delivery device and operable to lay a glass fiber mat in each mold in advance of said mixing and delivery device and in advance of filling of the mold with said mixture.
Claim 6
Dependent Claim
53 words
Apparatus as claimed In claim 6, including a second supplied device downstream of said stripping vibrator device and operable to place a second glass fiber mat onto the exposed surface of the mixture in each mold; and means operable to apply said second glass fiber mat onto such exposed surface of the mixture.
Claim 7
Dependent Claim
219 words
Apparatus for producing lightweight constructional plates by casting a mixture of filling material and a binder to a mold, comprising, in combination, a stationary mixing and delivery device arranged to have continuously supplied thereto a liquid cement binder and filling materials for mixing therein; at least one mold movable past said stationary mixing and delivery device for progressively filling the mold with the mixture discharged from said device; means operable to move said mold past said mixing and delivery device horizontally at a speed coordinated with the rate of mixture supply to the mold to fill the mold progressively to a uniform height; said mixing and delivery device being a slowly rotating drum on an inclined axis; conveyor means operable to supply-filling material continuously to one end of said drum; a centrifuge operable to centrifuge a cement and water to form a liquid cement binder and to supply the liquid cement binder continuously to said one end of said drum; a mixture stripping vibrator immediately downstream of said mixing and delivery device and operable to level the mixture in a mold and to subject only the mixture in the mold to vibration; means adjacent said mixing and delivery device operable to feed at least one reinforcing grid into each mold as the mold is being filled with said mixture.