CONNECTION ELEMENT WITH HOOK AND PLASTIC LINING TO REDUCE STRESSES THAT OCCUR IN PROCESS OF FIRE Russian patent published in 2010 - IPC E04B9/08 

FIELD: construction.

SUBSTANCE: connection element is fixed at the end of cross beam of suspended ceiling grating and enters slot in the main beam of grating. Connection element has metal core with hook, which retains connection element in slot and prevents it pulling out of slot. Connection element has plastic lining of metal core with ledges. Ledges fix position of connection element in slot and limit possibility of its further motion inside slot. In process of fire plastic lining melts down and provides for the possibility for connection element to enter further inside slot.

EFFECT: invention provides for longitudinal expansion of cross beam and reduction of thermal stresses that occur in it in process of heating.

6 cl, 13 dwg