作者: Richard O. Clark
DOI:
关键词:
摘要: A self-uprighting delineator post construction comprises a base that may take number of different forms and which is capable being fixed to any suitable stationary object. provided light weight impact resistance be composed one resistant materials. load cell interposed between the incorporates upper lower are in abutment pivotally disposed. The elements secured by pair cables disposed side-by-side relation maintained under tensile stress open or compression springs subjected predetermined spring preload. fit within aligned passages cells elongated cross-sectional configuration serve insure return its properly oriented upright position after forced toward horizontal an force.