Concrete block mold with moveable liner
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United States of America Patent
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Jan 14, 2014
Grant Date -
Aug 30, 2012
app pub date -
Feb 28, 2012
filing date -
Jul 29, 2003
priority date (Note) -
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Abstract
A mold assembly having a mold cavity formed by liner plates, at least one being moveable, an actuator having an actuator axis, and a force multiplier formed by first and second drive elements, the first drive element positioned off-axis from the actuator axis and in mechanical communication with the moveable liner plate, the second drive element operatively coupled to the first drive element, and the actuator configured to provide a first force having a first magnitude in a first direction along the actuator axis to the second drive element which moves the first drive element and the moveable liner plate in an extending direction, wherein a magnitude of a force applied to the moveable liner plate resulting from compression of dry cast concrete in the mold cavity that is required to move the moveable liner plate in a direction opposite the extending direction is greater than the first magnitude.
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