ELECTRIC ISOLATING CASE FOR PROTECTION OF CURRENT- CONDUCTING RAIL Russian patent published in 2003 - IPC

FIELD: railway transport; power supply lines. SUBSTANCE: invention relates to power supply devices arranged along railway bed and it can be used for protection of current-conducting rail. Proposed case consists of hollow long-length member with cross-section profile in form of corrugation with downcast side walls and open slot channel between their edges. Wall of long-length member is made crescent-shaped in profile of corrugation with thickness increasing from downcast side walls to its axis of symmetry. Edges of side walls are provided with inner side projections with common profile of convexity. EFFECT: increased rigidity and strength at decreased mass. 7 cl, 4 dwg