LOCK WITH THERMAL DISENGAGEMENT Russian patent published in 2016 - IPC A62C37/12 

FIELD: fire safety.

SUBSTANCE: invention relates to automatic fire extinguishing means and can be used for fire extinguishing. Before operation shaft 6 is set by a clockwise turn to the initial position. Herewith body of revolution 3 extends from locking surface 5 overcoming spring 8 force thus enabling shaft 6 turn, and spring 8 twists to make the shaft return moment. After the moment of installation is over the revolution body is again at the locking surface, self-locking of shaft 6 occurs and mark 11 will stay on top. Herewith separation of the inlet and the outlet branch pipes of housing 1 by shaft 6 takes place. Fire occurrence will lead to higher temperature near housing 1 and further heating of ring 9, which will start increasing in diameter. Between the ring and ledge 10 a gap will appear, under the effect of return moment of shaft 6 revolution body 3 will move along locking surface 5 of cantilever beam 2 lifting the latter. Flowing through the whole locking surface 5, the body of revolution starts turning not preventing rotation of shaft 6 counterclockwise due to return moment of spring 8. Hyped by spring shaft rotates at high angle, as the result of which the inlet and the outlet branch pipes are connected through hole 7 of the shaft, and a fire-extinguishing substance is delivered into actuating devices feeding it into a source of fire.

EFFECT: simplified design, expanded functional capabilities and better operational characteristics.

4 cl, 2 dwg