Apparatus for measuring pull-out resistance

Details Apparatus for measuring pull-out resistance Apparatus for measuring pull-out resistance

G - Physics

01

N

73/88

G01N 3/16 (2006.01) G01L 5/00 (2006.01) G01N 3/00 (2006.01) G01N 3/02 (2006.01)

Patent

CA 1249733

Abstract A testing apparatus for measuring the pull-out resistance of fasteners. The apparatus includes a disc rotatably supported by a base. The disc has a bearing surface with a uniform radius. A flexible strap is fixed to the disc so that the strap is carried by the bearing surface as the disc rotates. A torque wrench is used to rotate the disc. The length of the constant radius and the flexible nature of the strap create a constant moment arm, making the torque measured by the wrench directly convertible to pull-out load.

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