EXPENDABLE LOCK Russian patent published in 1999 - IPC

FIELD: locking devices. SUBSTANCE: expendable lock relates to gadgets intended for locking and lead-sealing of various types of running stock. Lock has following components: body with inlet opening and blind stepped hole, stem with recess introduced into this hole, detent member located in body hole and positioned in stem recess after introduction of stem into body hole. Inlet opening of body is not of round shape in its cross-section and it has at least one protrusion. Stem has at least one longitudinal slot which crosses recess in stem. Located in recess of stem is protrusion of inlet opening. Washer is additionally installed in body at distance from inlet opening equal to length of stem head-piece. Hole in washer is also not round in shape in lateral cross-section, and it has at least one protrusion. Protrusion of washer is turned to some angle relative to protrusion of inlet opening. Number of slots in stem head-piece is equal to number of protrusions both in inlet opening and in washer. Location of slots in head-piece corresponds to location of protrusions in inlet opening and in washer. Number of slots in stem itself is equal to total number of protrusions in inlet opening and in washer. Arrangement of slots in stem corresponds to arrangement of protrusions in inlet opening and in washer. Aforesaid embodiment of expendable lock allows for increasing its reliability. EFFECT: higher efficiency. 2 cl, 8 dwg