Patent attributes
A bollard device including a frame insertable in a horizontal plane. A base plate is disposed on the frame and has a hole. A movable part is received within the hole and moves vertically between a retracted position, wherein an upper end thereof is flush with the base plate, and an extended position wherein the upper end of the movable part extends beyond the base plate to create an obstacle. The frame includes a plurality of metallic supports defining an underground housing for the movable part and guides by which the movable part slides vertically. Actuating element is housed either in the frame or in the movable part and is configured to permit the vertical movement of the movable part. The movable part includes a stem and a protective tubular member disposed on the stem and constrained thereon by removable coupling element permitting the protective tubular member to be removed.
