A manually foldable top for automobile vehicles is disclosed which includes a pivot bracket for installing the top on a vehicle body and further includes a spring assembly operatively attached to a side arm assembly for movement of the foldable top from a closed position to an open position; an arcuate...http://www.google.es/patents/US4741571?utm_source=gb-gplus-sharePatente US4741571 - Manually foldable top for automobile vehicles
