Concrete block machine having a controllable cutoff bar

Plastic article or earthenware shaping or treating: apparatus – With means to gather excess or rejected stock material – Dynamic gatherer

Reexamination Certificate

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Details

C425S219000, C425S258000, C425S447000

Reexamination Certificate

active

08002536

ABSTRACT:
A concrete block machine including a mold having at least one mold cavity, a feedbox driven back and forth between retracted and extended positions, wherein the feedbox is positioned over a top of the mold deposits concrete in the at least one mold cavity when at the extended position, a cutoff bar coupled to the feedbox and including a moveable cutoff element, and a drive system. The drive system is coupled to the moveable cutoff element and moves the moveable cutoff element to adjust a distance between the moveable cutoff element and the top of the mold as the feedbox is driven from the extended position to the retracted position such that the moveable cutoff element removes varying amounts of concrete deposited in the mold cavity so that a depth of concrete remaining in the mold cavity varies in a desired fashion in a direction of movement of the feedbox.

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Search Report for application PCT/US2009/050259, mailed Jun. 11, 2009, 13 pgs.
Besser Company, Sales Orders, Parts Lists, Correlation Sheet, Brochures, Drawings, 29 pages.

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