Patent ID: 6827322
Filing Date: 2004-12-07
Classification: B28B

Abstract:
A recoverable improved casing for manufacturing of recesses comprising:a prismatic mould of an inverted â€œUâ€  section, the mould made from fiberglass; the mould having an internal metallic grid support which is joined to an end rib having a greater cross-section than the metallic grid support, the internal grid support also having a lower end socket made of metal, the lower end socket being joined to said end rib; wherein the mould has a decreasing section, with the smaller end being closed, the mould further having internal longitudinal and transversal reinforcement ribs, with nodes being defined at the points of intersection between longitudinal and transversal reinforcement ribs, some of the nodes having a socket of metallic flanges; wherein the sockets of metallic flanges are joined by means of tappets to a series of rods, the rods in turn being joined by means of tappets to a series of metallic crossbars, with the metallic crossbars connected to one another; wherein the crossbars having ends which extend outside the mould, the ends being joined by billets to a lug, with the lug by means of a rod being coupled to other parallel lugs, the parallel lugs being arranged at the end of a rod of a hydraulic mould removal piston, the piston being mounted in a structure in the form a â€œCâ€ , with the ends of the structure resting on the front of the recess.