Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Angus Peter Robson0
Date of Patent
August 5, 2008
0Patent Application Number
105327710
Date Filed
October 21, 2003
0Patent Primary Examiner
Patent 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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