ROAD VIEWING DEVICE Russian patent published in 2014 - IPC E02D29/14 

FIELD: construction.

SUBSTANCE: road viewing device includes a frame, limiting a mouth, plug, comprising a locking plate, disposed in the plane of the plate, the first hinge equipped with the first cam and first counter-cam, designed with possibility to direct the plug between the unlocked opened position and closed position, and safety means, preventing lift of the plug in a closed position in the direction perpendicular to the plane of the plate. The safety means comprise the first safety element and the first safety counter element. The road viewing device comprises the first supporting bracket to be connected to the frame and comprising the first cam and the first safety element.

EFFECT: development of device for inspection hatches of access to telecommunication networks.

12 cl, 13 dwg