Device and method for measuring the impact properties of a sport field surface
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United States of America Patent
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Jul 17, 2007
Grant Date -
Aug 17, 2006
app pub date -
Feb 16, 2005
filing date -
Feb 16, 2005
priority date (Note) -
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Abstract
The tuft impact tester mounts a test probe in a suspended manner from a tripod arrangement via a gimbals mechanism so that the test probe is able to move along a vertical axis. The test probe is dropped from a predetermined height, the velocity of the test probe is measured prior to impact on a ground surface and the deceleration of the test probe caused by the ground surface is measured. The two values are used to determine the relative hardness of the ground surface.
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