Block mold having moveable liner

Details Block mold having moveable liner Block mold having moveable liner

2007-02-13

2007-02-13

Heckenberg, Donald (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Shaping surface including means to release or remove product...

By movable mold sections

C425S413000, C425S421000

Reexamination Certificate

active

11036147

ABSTRACT:
A mold assembly for producing masonry blocks and adapted for use in a masonry block machine. The mold assembly includes a plurality of liner plates, each liner plate having a major surface, the liner plates positioned within a mold box and configured such that the major surfaces form a mold cavity having a desired form, wherein at least one of the liner plates is moveable between a retracted position and a desired extended position toward an interior of the mold cavity. A gear drive assembly selectively coupled to the at least one moveable liner plate and configured to move the at least one moveable liner plate between the retracted position and the extended position, wherein the gear drive assembly is positioned substantially external to the mold box when the at least one moveable liner plate is in the retracted position.

REFERENCES:
patent: 2304660 (1942-12-01), Scott
patent: 2526198 (1950-10-01), Clanton
patent: 4063866 (1977-12-01), Lurbiecki
patent: 4869660 (1989-09-01), Ruckstuhl
patent: 6349522 (2002-02-01), Stevens
patent: 6470762 (2002-10-01), Burkart
patent: 2003/0034576 (2003-02-01), Russell
patent: 2003/0126821 (2003-07-01), Scherer et al.
patent: 2003/0182011 (2003-09-01), Scherer et al.
patent: 41 40 093 (1993-06-01), None

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