Patent ID: 11959889
Assignee: TROXLER ELECTRONIC LABORATORIES INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An apparatus for testing paving samples, comprising:
a base;
a paving sample tray;
a roller configured for imparting compressive forces to a sample carried by the sample tray;
an arm configured for moving the roller from a stowed position to an in-use position where the roller contacts the sample;
a cylinder assembly having a piston therein for supplying pressure forces to the arm to move the arm from the stowed position to the in-use position, wherein a depth of travel of the arm is limited by the sample, whereby as the sample is compressed, the depth of travel increases;
a measurement device in communication with the cylinder for determining an amount of travel of the arm to thus determine an amount of compression of the sample and a difference between a movement profile of the roller and a predetermined profile; and
a control system configured to alter a speed of the arm in order to adjust the movement profile of the roller to match the predetermined profile.