Raising and Lowering the Wings138

There are a number of ways to raise and lower the wings138. The lower and upper chocking members may be slightly raised in a lowered position to reduce the forces on the chock. The wings138 also contact the first and second post guides 164 and 168 respectively. When raised, the wings contact these two guide elements. This action lowers the chock 90 and lifts the upper chocking member 114. The lower chocking member 98 also rises.

The chock 90 includes two support members and generally triangular support wings 138. The support wings 138 are attached to the upper chocking member 114, and each wing includes a forward edge 142 and a bottom edge 146. The wings each include a second hinge section 150. These wings are connected to each other by hinge pins 154 that extend through the first hinge section 134 of the upper chocking member 114. The orientation of the hinge is not critical to the invention.

The support Wings 138 of chock 90 deflect inward and rise. This raises the hinge axis and helps lift the upper chocking member 114. The wings 138 contact the first and second post guides. If this mechanism isn't working, the wings must be adjusted and repositioned so that the chock is stable. Read the full instructions for chock 90 for more information. This article will help you install the chock 90 and learn how to use support wings 138.