A child safety seat 10 is adapted to rest on a vehicle seat and to be secured thereon by a vehicle seat belt 32 which extends through an opening 16 in the child seat 10 so that the vehicle seat belt 32 passes between a seated occupant of the child seat 10 and the vehicle seat. A traveller 20 can be coupled...http://www.google.es/patents/US5954397?utm_source=gb-gplus-sharePatente US5954397 - Child safety seat
