DEVICE FOR CREATING SAFETY CONDITIONS IN MOVEMENT OF TRANSPORTATION FACILITIES Russian patent published in 1998 - IPC

FIELD: pavement maintenance equipment. SUBSTANCE: this relates to heating and clearing of pavement concrete surface in cases of snow fall, ice coverage and fog. Device is provided with air ducts located at left and right sides above concrete surface of pavement and having discharge openings. Air ducts are connected with source of compressed air and temperature adjusting unit. Air duct at each side is made in the form of one, two or more air collectors. Arranged in middle over length of each air collector are stoppers, discharge openings which can be located for example in staggered order in three rows after for example each 50 mm intervals. Air collectors of one side are provided with common slot-like nozzle with struts at ends. Each air collector is connected by its open end with air compressor and air heater so as to deliver compressed air and create blanket of heated air hovering above concrete surface. Air collector can be made of heat-resistant plastic material. Operating mode of device makes it economical in function. EFFECT: higher efficiency. 1 cl, 3 dwg