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Method and apparatus for determining the angle of gyration and/or the pressure in a gyratory compactor

  • US 6,868,738 B2
  • Filed: 07/31/2002
  • Issued: 03/22/2005
  • Est. Priority Date: 07/31/2002
  • Status: Expired due to Fees
First Claim
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1. A device adapted to dynamically measure a pressure exerted on a sample contained within a cylindrical mold or a gyratory compactor, said device comprising:

  • a rigid disk-shaped plate defining an axis and a periphery, the plate being adapted to be disposed within the mold in communication with the sample; and

    at least one proximity-sensing device operably engaged with the plate, the at least one proximity-sensing device being configured to dynamically measure a proximity of a reference member with respect to the at least one proximity-sensing device and to produce therefrom a signal corresponding to the pressure exerted on the sample within the mold.

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