| 摘要 |
<p>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 edges truncated. The chock further comprising clamping means, for holding the sections with adjacent triangular faces in tight abutment; and further comprises male/female interlock means in adjacent abutting triangular faces of said sections and cooperating with said clamping means, for preventing relative rotational movement between adjacent sections about the longitudinal axis.</p> |
