BOTTLE SAFETY CAP Russian patent published in 2004 - IPC

FIELD: capping devices for flasks holding low-viscosity liquids to prevent their refilling in storage or in transit. SUBSTANCE: problem of additional safety level is solved by means of threaded bottle safety cap turned onto external thread of bushing whose ribs are joined with internal bushing thereby organizing passages; it has flexible member with through hole and projections forming annular cavity open on top that accommodates bottom part of internal bushing to form clearance between bottom and flexible member projections; there is metal casing on threaded cap; the latter has pilot check rim over its outline; metal casing is built of two mating parts whose edges are expanded into pilot check rim for opening one of mentioned edges when turning out the cap. EFFECT: enhanced reliability of cap due to using additional level of protection. 1 cl, 3 dwg