Method and apparatus for forming concrete blocks

B - Operations – Transporting – 28 – B

Patent

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B28B 3/00 (2006.01) B28B 3/02 (2006.01) B28B 3/04 (2006.01)

Patent

CA 2658948

A method and apparatus for forming a concrete block in form having a resilient insert forming a cavity in which the block is cast and a rigid support for the resilient insert. After the block has cured, the form is inverted. One or more areas of the insert are tethered to the support so that at least a portion of the insert can fall a short distance from the support. The weight of the cast block sufficiently deforms the insert to allow the block to fall free from the insert. When the form is again inverted to its upright position, the insert falls back into the support and returns to its original shape.

L'invention concerne un procédé et un appareil pour former un bloc de béton dans un coffrage ayant une pièce rapportée élastique formant une cavité dans laquelle le bloc est coulé, et un support rigide pour la pièce rapportée élastique. Après que le bloc a été durci, le coffrage est renversé. Une ou plusieurs zones de la pièce rapportée sont attachées sur le support de sorte qu'au moins une partie de la pièce rapportée peut tomber sur une courte distance à partir du support. Le poids du bloc coulé déforme suffisamment la pièce rapportée pour permettre au bloc de tomber libre de la pièce rapportée. Lorsque le coffrage est à nouveau renversé vers sa position droite, la pièce rapportée tombe en arrière dans le support et reprend sa forme d'origine.

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