Method and apparatus for forming concrete blocks

Details Method and apparatus for forming concrete blocks Method and apparatus for forming concrete blocks

2006-11-21

2009-11-17

Crispino, Richard (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C249S066100, C249S112000, C249S127000, C425S439000, C425S440000

Reexamination Certificate

active

07618578

ABSTRACT:
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.

REFERENCES:
patent: 2614309 (1952-10-01), Price
patent: 4228985 (1980-10-01), Gaudelli et al.
patent: 5268137 (1993-12-01), Scott et al.
patent: 6997427 (2006-02-01), Manthei
patent: 2002/0030303 (2002-03-01), Manthei et al.
patent: 2002/0152709 (2002-10-01), Gresser et al.
patent: 2003/0160147 (2003-08-01), Manthei
patent: 2005/0061947 (2005-03-01), Smirnov et al.

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