CUT-OFF DEVICE Russian patent published in 1997 - IPC

FIELD: mechanical engineering; shutting-off mains of pneumohydraulic systems of machines and mechanisms. SUBSTANCE: cut-off valve is provided with spring-loaded gate and locking member made from material possessing form memory. Locking member is made in the form of thin-walled threaded sleeve. On side of open end, sleeve is rigidly and tightly connected with valve body perpendicularly to axis of gate. Device is provided with pyrochamber and pyroelement. Interior of sleeve is brought in communication with pyrochamber where thermocharge is placed. Bottom of sleeve is brought in contact with gate for axial displacement towards secured end of sleeve. EFFECT: enhanced reliability. 1 dwg