| 摘要 |
1,020,318. Clearing snow. P. EISLER. Jan. 19, 1962, No. 11508/65. Divided out of 1,020,311. Heading E1G. [Also in Divisions A2, F4 and H5] De-icing of a road-way is carried out by successively switching on sections of electric heating film embedded in the road surface in front of a motorized rotary brush or pushing device just long enough to melt the ice layer at the road-ice interface. The ice having thus lost anchorage is pushed away by the brush or blade. The heating film is of the meander type, and is preferably as described in the parent Specification (see Division H5). |
