Barrier for entry roads, as for parking lots or similar

摘要

A spiral leg spring (F) is installed co-axially on the interconnected post (13) and locking arm (11), with one leg (73) secured on the post and the other leg (38) on the locking arm. The restoring force of the spring reacts to the weight of the descending locking arm. The post has a stop (18) and the locking arm has a corresponding mating stop (23), and in the locked position of the locking arm the two stops lie one upon the other.