Patent ID: 11904796
Assignee: JOYSON SAFETY SYSTEMS ACQUISITION LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 16:
17. A seat belt system for restraining an occupant of a vehicle, the system including a webbing and a pretensioner, wherein the pretensioner comprises:
a housing and a gas generator,
an outer cylinder connected to the housing, and a piston movably located within the outer cylinder,
a cable connected to the webbing at one end;
an inner cylinder movably located within the outer cylinder wherein a second end of the cable and the gas generator are located within the inner cylinder,
wherein the gas generator is configured to provide gas into a pressure chamber located outside of the inner cylinder and inside of the outer cylinder;
wherein the inner cylinder and the cable are configured to be driven in a pretensioning direction by the piston when the gas generator is activated;
wherein the inner cylinder includes radial holes to allow gases provided by the gas generator to escape from the inner cylinder into the pressure chamber;
a sealing ring located between the outer cylinder and the inner cylinder, wherein the sealing ring is configured to provide a seal to prevent the gases provided by the gas generator from passing; and
a deflector shield located between the outer cylinder and the inner cylinder and closer to the pressure chamber than the sealing ring, wherein the deflector shield is configured to deflect the gases away from the sealing ring.