NAVIGATION METAL MARKER Russian patent published in 2004 - IPC

FIELD: navigation.

SUBSTANCE: the navigation metal marker has a supporting cylindrical stem made with an end bearing plate on the lower end, vertical ramp located inside it, as well as with side and upper end access hatches, operating pad joined to the upper end of the mentioned stem, and a daylight visibility shield. This shield is made with a cylindrical body located coaxially with the supporting stem, and having a cover and a bottom with the aid of which the shield is connected to the stem. The operating pad with a lifting tackle installed on it is connected to the mentioned body by means of light optical and electrical equipment with formation of a space, 1.8 to 2.0m high, between its floor and the body cover. Operating hatches for exit outside of the load beam of the lifting tackle are positioned around the edges of the shield body. The covers of the access hatches are made with locks, the lower edge of the side access hatch is located at a height of 2.5 to 3.0m from the upper surface of the operating pad.

EFFECT: enhanced reliability of the navigation marker in service.

4 cl, 1 dwg