Seat belt system

A vehicle seat belt system having an upper passive and a lower active seat occupant restraint means, comprising:

• a belt retractor mechanism mounted within a vehicle door adjacent one side of the vehicle seat,
• a continuous seat belt extending from the retractor mechanism through a first guide ring mounted above the retractor mechanism on a frame member of the door, and further, in door closed position, extending diagonally across the seat occupant's body and freely slidable through a second guide ring anchored to a vehicle floor mounted attachment means on the other side of the seat,
• the terminal end of the seat belt carrying a buckle tongue constructed and arranged to coact with the second guide ring to prevent disengagement of the terminal end of the seat belt from the second guide ring and thereby maintaining the seat belt in its diagonally extending occupant restraint position under all operating conditions,
• the seat belt diagonally extending portion automatically fitting itself across the upper body portion of the seat occupant upon the door being closed thereby providing an upper passive restraint means,
• and buckle means attached to the vehicle on the one side of the seat to which the buckle tongue may be manually coupled upon the seat occupant further extending the seat belt across his lap thereby providing in addition to the upper passive restraint means a lower active restraint means.