Adjustable-height hydrant cover in road - has central tapped hole in cross-member supporting jacking spindle top end

摘要

The height-adjustable surface cover is for a fire hydrant etc. below the surface of a road, pavement etc., having a lever mechanism in the bottom part of a housing and lifting the top part with cover. The mechanism has a jacking spindle with plate engaging under radial internal protrusions on the top part, which is lockable at the desired height. The mechanism has a cross-member (19) with central tapped hole supporting the top end of the spindle (18), and resting via arms (20) parallel to thespindle on the top edge of the bottom part (1) of the housing. The plate (22) turns freely on the spindle bottom end so as to engage under the protrusions. The top part (2) of the housing has an axial guide slot for a bolt screwing into the bottom one and acting on locking teeth securing the housing parts to each other. ADVANTAGE - Easy adaptation to different road surface levels.