Restraint system with belt tensioner and airbag

1. Restraint system for occupants of a vehicle, which comprises a belt and a belt-tensioning means arranged on the belt, wherein at least a certain part of the belt is at least temporarily tensioned when the belt-tensioning means is activated, wherein an airbag serves as the belt-tensioning means;

characterized in that the restraint system comprises at least one throttle loop, which extends at least partially around the folded airbag and which is arranged between the two end areas of the bag which are opposite each other in the longitudinal direction of the belt.

2. Restraint system according to claim 1 , characterized in that the airbag is connected to the belt at least at the two end areas which are opposite each other in the longitudinal direction of the belt.

3. Restraint system for occupants of a vehicle, which comprises a belt and a belt-tensioning means arranged on the belt, wherein at least a certain part of the belt is at least temporarily tensioned when the belt-tensioning means is activated, wherein an airbag serves as the belt-tensioning means;

characterized in that the airbag is connected to the belt at least at the two end areas which are opposite each other in the longitudinal direction of the belt.

4. A restraint system for an occupant of a vehicle, comprising:

a belt; and

an actuatable airbag on the belt, a first portion of the airbag being connected to a first portion of the belt and a second portion of the airbag being connected to a second portion of the belt spaced apart from the first portion of the belt;

the first and second portions of the airbag moving toward each other in response to actuation of the airbag, thereby causing the first and second portions of the belt to move toward each other, thereby to tension the belt;

comprising at least one throttle loop which extends at least partially around the folded airbag between the first and second portions of the air bag to constrict the airbag when inflated.

5. A restraint system as set forth in claim 4 wherein the throttle loop is detached when the internal pressure in the airbag exceeds a predetermined level.

6. A restraint system for an occupant of a vehicle, comprising:

a belt; and

an actuatable airbag on the belt, a first portion of the airbag being connected to a first portion of the belt and a second portion of the airbag being connected to a second portion of the belt spaced apart from the first portion of the belt;

the first and second portions of the airbag moving toward each other in response to actuation of the airbag, thereby causing the first and second portions of the belt to move toward each other, thereby to tension the belt;

wherein the airbag is folded around the belt in a U-shaped manner and the closed part of the U-shaped fold of the airbag is oriented toward the center of the body of the occupant when the restraint system is in use.

7. A restraint system for an occupant of a vehicle, comprising:

a belt; and

an actuatable airbag on the belt, a first portion of the airbag being connected to a first portion of the belt and a second portion of the airbag being connected to a second portion of the belt spaced apart from the first portion of the belt;

the first and second portions of the airbag moving toward each other in response to actuation of the airbag, thereby causing the first and second portions of the belt to move toward each other, thereby to tension the belt;

characterized in that the airbag when in its expanded state is constricted by a throttle loop, the constriction present in the expanded state of the airbag can be released by the tearing of the throttle loop, the throttle loop is disposed on the restraint system in the shoulder area of the occupant when in use, and one-third of the expanded volume of the airbag is located between the occupant and the belt.