Heavy duty chocks

Abstract From the Canadian patent

A heavy duty chock for use in preventing the movement, of wheeled vehicles is an equilateral triangular in crosssection, with a longitudinal axis and three longitudinal edges and is divided transverse to its longitudinal axis into a number of equilateral triangular sections each having two triangular faces with adjacent sections having mutually facing triangular faces. There is an end section at each end of the chock and a number of central sections located between the end sections each, central section defining at least one space extending longitudinally therethrough, the end and central sections being formed from an elastomeric material, and the chock has all three of its longitudinal …