Insect e.g. mosquito, passage preventing device for public roads equipment, has frame supporting fine mesh web removably housed in frame of public roads equipment below removable covering piece

摘要

The device has a frame (2) for supporting a fine mesh web (3) removably housed in a frame (1) of a public roads equipment below a removable covering piece e.g. a grid or a pad. The frame (2) has support lugs (5) projecting outwards of the frame (2) and supported on an inner peripheral edge (1a) of the frame (1) so that the frame (1) supports the frame (2). Each lug has a branch integrated by welding to an inner face of a vertical branch of each of several angle irons and another branch projecting above an upper edge of the vertical branch perpendicular to the vertical branch.