CLOSING PLUG AND CAP Russian patent published in 2008 - IPC B65D39/08 B65D51/18 

FIELD: transportation.

SUBSTANCE: combination of a closing plug and a cap with the access indication for transport containers. The said closing plug incorporates a cylindrical cup-like case with axially extending ledges designed to get engaged for the plug to be screwed out and arranged on the plug side wall inner periphery, and a segmented groove made in the plug side surface running radially and along the circumference. The cap is furnished with axially extending flexible legs, each with radially extending tab designed to engage the said radial groove for concealed locking. The cap has, also, a fragile part allowing its removal from the plug and visible when the plug and the cap are engaged. Note here, that the closing plug incorporates a radial groove formed by a radial recess at the base of every ledge, while the cap is furnished with tabs and legs extending radially outwards to get locked under the said ledges in recesses forming the grooves. The closing cap is locked on the said plug irrespective of their relative angular position.

EFFECT: provision for detection of opening the aforesaid combination.

11 cl, 8 dwg