Load limiting seatbelt retractor
AssigneeFord Global Technologies, LLC
InventorsMohammad Omar Faruque, James Chih Cheng, Robert William McCoy, Saeed David Barbat, Dean M. Jaradi
Life of this patent
Estimating the term…
Abstract
A seatbelt retractor includes a base, a spool, a cylinder, a sleeve and a cylinder lock. The spool is rotatably coupled to the base and has a piston portion. A smaller initialization piston extends from the piston portion. The cylinder is engaged with the piston portion and therewith defines a first chamber. The sleeve is within the cylinder and receives the initialization piston. The sleeve and the initialization piston define an initialization chamber. The cylinder lock in a first condition rotatably fixes the cylinder to the base. Damping fluid is disposed in the chamber.
Claims20
A seatbelt retractor comprising:
- a base;
- a spool rotatably coupled to the base and including a piston portion and a smaller initialization piston extending therefrom;
- a cylinder engaged with the piston portion and therewith defining a main chamber;
- a sleeve within the cylinder receiving the initialization piston and therewith defining an initialization chamber;
- a cylinder lock in a first condition rotatably fixing the cylinder to the base;
- and
- a damping fluid in the chambers.
Dependencies are inferred from the claim text.