| 摘要 |
<p>A rescue frame (10) to pivot about footings (13) supported adjacent to an upper edge of a vertical incline. The rescue frame (10) comprlses a primary tubular member (14) passing through the footings (13) and having attached thereto a number of secondary tubular members (15, 16, 17, 18) so as to form a triangular pyramid having a pulley (24) attached to it's apex (22) such that upon pivoting the frame (10) about the primary member (14), the pulley (24) will extend out over the edge so that rope (27) and stretcher (3) may clear the incline during a lifting or lowering operation. Upon reaching the top of the incline, frame (10) is pivoted back to laterally transfer the stretcher (3) to another side of the primary member (14) to safety located stretcher (43) above the ground where it may be released from rope (27).</p> |
