Patent ID: 7481399

Claim:
A position securing system for restraining in a land or aeronautical vehicle an occupant who alternates between seated and standing positions, comprising: a harness attached to an occupant's body and including a two-part lap belt defining two lap belt straps, two leg loops, a rear belt, two shoulder belts, a back belt, and a belly-side center buckle; and a plurality of retractors connectable to the vehicle and interacting with the shoulder belts and the belt straps of the lap belt in one-to-one correspondence, wherein at least the retractors interacting with the lap belt straps are each constructed to include a winding drum for winding in a reel-in direction a traction member which is integrated in the lap belt strap, said winding drum being loaded by a spring in the reel-in direction, a locking mechanism for barring rotation of the winding drum at least in a pay-out direction of the traction member, when the occupant assumes a seated position, a hand-operated control mechanism for disengaging the locking mechanism to allow the winding drum to freely rotate so that the occupant is able to move between the seated and standing positions, a pay-out lock operatively connected to the winding drum and constructed to act upon the winding drum in response to a sensed acceleration above a predefined level, wherein the control mechanism and the pay-out lock are so operatively connected to the locking mechanism that the winding drum is lockable in position by either the control mechanism or by the pay-out lock, when the occupant assumes the standing position.