Surface friction tester

Details Surface friction tester Surface friction tester

G - Physics

01

N

73/84

G01N 19/02 (2006.01)

Patent

CA 1120287

Docket 6525 SURFACE FRICTION TESTER Abstract of the Disclosure A surface friction tester in the form of a friction sled which may be pulled over a surface to determine the coefficient of friction of that surface. The sled has a friction surface characterizing a vehicle tire tread attached to the bottom of a base plate. The base plate is a part of a sled frame which also has a tongue portion. A straight spring scale attached to the tongue is used to measure the force required to pull the sled over the surface. The friction sled is especially adapted for accident investigations in order to allow the investigator to determine the coefficient of friction of the surfaces upon which skid marks exist and, thus, calculate the vehicle velocity at the time of brake locking on the basis of the skid marks left by the sliding vehicle.

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