EXPLOSION-PROOF HEAD ACCUMULATOR-TYPE LAMP Russian patent published in 1999 - IPC

FIELD: explosion-proof power source. SUBSTANCE: lamp has casing with accumulator batteries and detachable cover, and sealing device disposed along perimeter of cover and casing contact surface, connecting cord, headlight with filament lamp and accumulator charging positive electrode fixed in through opening of headlight casing. Positive electrode has conical sleeve, and conical through opening in headlight casing is provided with bosses. Conical sleeve may be conjugated with conical through opening. Sealing device is further provided with flame extinguisher formed as labyrinth extending along perimeter of cover and casing contact surface. EFFECT: increased efficiency and simplified construction. 4 cl, 3 dwg