Patent ID: 6853297

Claim:
A safety insert ( 3 ) intended to support a tread of a tire ( 1 ) mounted on a wheel rim during rolling with a pressure capable of bringing about at least partial flattening of a portion of the tire, comprising: a substantially circumferential base ( 8 ) intended to come into contact with the wheel rim ( 2 ), a substantially circumferential annular body ( 9 ) and a housing ( 19 ) intended to receive a wheel unit ( 20 ) comprising a radio transmitter ( 25 ) connected to a first magnetic coupling winding ( 21 ), said safety insert ( 3 ) further comprising an aerial ( 14 ) rigidly connected to the insert ( 3 ) and a second magnetic coupling winding ( 15 ) disposed in the safety insert, wherein said second magnetic coupling winding ( 15 ) is proximate to the housing ( 19 ) of the wheel unit.