DEVICE FOR MELTING BITUMEN MASTIC Russian patent published in 1996 - IPC

FIELD: civil engineering, roofing, waterproofing activity. SUBSTANCE: device has a tank provided with a lid, electric heating members with protective heat conducting cladding placed in horizontal plane over tank bottom. Current leads are placed in niches covered by lids on opposite walls of the tank. Process control system is provided. Vertical rods are connected through collars. Tops of the rods are placed above material level and connected to internal surface of tank walls through blocks. Tap is made in the form of sleeve placed coaxially in dump pipe with handle and pin fastened to one end. The pin is placed a slot originated in the dump pipe, sleeve slewing angle may be restricted. Another butt of the sleeve is blind and has lengthwise grooves. Dump pipe axis is placed at acute angle to horizontal plane of the bottom in area of heating members. Sleeve grooves and dump pipe openings are coaxial and equal. EFFECT: high efficiency. 8 cl, 15 dwg