Abstract: A self-retracting extension limiting device. It is designed to be attached between a first object and a second object, where the distance between the first and second objects is variable. The device exerts a restoring force tending to draw the two objects together. A first, relatively weak restoring force is exerted over a range of distance. Then, when the objects have been separated to a defined limit of travel, the device exerts a much greater restoring force. The invention includes overlapping and self-contained elements so that unwanted slack is minimized.

Abstract: A load pin and clevis joint for joining two or more mechanical components together. The load pin includes a retention feature that requires two separate motions to unlock the pin. In a locked state, the load pin is secured across both halves of a clevis joint so that it completely spans an open span between the two clevis halves. In the preferred embodiment, the two motions required to unlock the load pin are (1) moving the load pin linearly; and (2) rotating the load pin.

Abstract: A load pin and clevis joint for joining two or more mechanical components together. The load pin includes a retention feature that requires two separate motions to unlock the pin. In a locked state, the load pin is secured across both halves of a clevis joint so that it completely spans an open span between the two clevis halves. In the preferred embodiment, the two motions required to unlock the load pin are (1) moving the load pin linearly; and (2) rotating the load pin.

Abstract: An anchor having an internal passage defined by a revolved wall profile. The anchor is conceptually divided into four regions: a neck region, a transition region, a mid region, and a distal region. Each of these regions has its own design considerations. A portion of an ellipse is used to define at least part of the revolved wall profile. The use of an elliptical portion allows the anchor to be optimized for the different regions.

Abstract: A spreader tip which can be applied to a variety of different spreader bars having different shapes and sizes. The spreader tip features at least one mounting arm which is positioned to bear against a portion of the spreader bar's exterior. The engagement between the at least one mounting arm and the exterior of the spreader bar is discontinuous, in that it engages less than the entire circumference of the spreader bar's exterior.

Abstract: A self-retracting extension limiting device. It is designed to be attached between a first object and a second object, where the distance between the first and second objects is variable. The device exerts a restoring force tending to draw the two objects together. A first, relatively weak restoring force is exerted over a range of distance. Then, when the objects have been separated to a defined limit of travel, the device exerts a much greater restoring force. The invention includes overlapping and self-contained elements so that unwanted slack is minimized.

Abstract: A spreader tip which can be applied to a variety of different spreader bars having different shapes and sizes. The spreader tip features at least one mounting arm which is positioned to bear against a portion of the spreader bar's exterior. The engagement between the at least one mounting arm and the exterior of the spreader bar is discontinuous, in that it engages less than the entire circumference of the spreader bar's exterior.