FIRE EXTINGUISHER Russian patent published in 1994 - IPC

FIELD: fire fighting. SUBSTANCE: fire extinguisher has case intended for fire-extinguishing compound under pressure, siphon tube, lock valve with clamping nut and starting unit, press rod and bushing mounted onto the rod for axial movement. The bushing has facet in its internal recess. The valve has shank provided with bead and fixing unit made in form of two resilient plates, which have ends mounted in clamping nut. The nut has cylindrical protrusion with grooves for the ends. Bead of shank of lock valve rests against fixing unit with its lower surface. Internal diameter of the bushing is less than external size of resilient plates. Stroke of the bushing is larger than space between rod and shank of the valve. EFFECT: improved reliability. 3 dwg