Locking mechanism
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United States of America Patent
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Aug 5, 2008
Grant Date -
Sep 14, 2006
app pub date -
Oct 21, 2003
filing date -
Oct 21, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to a method of securing a shaft at any point along its substantially vertical axis of movement, wherein the method includes a locking device that is moveable with respect to the shaft. The method is characterised by the step of moving the locking device into a position wherein at least one face of the locking device mates against at least one point on the shaft so as to secure the shaft at any point along its substantially vertical axis of movement. In particular this invention relates to a method of securing a drop hammer at any point along its substantially vertical axis by use of a hydraulically controlled cam.
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