Load limiting seatbelt retractor
First Claim
Patent Images
1. A seatbelt retractor comprising:
- a spool rotatably connected with a base by a piston and a cylinder;
the piston fixed to one of the base and the spool;
the cylinder receiving the piston, fixed to the other of the base and the spool, defining a first chamber; and
a ring sealed against the cylinder and defining a second chamber connected with the first chamber by an aperture; and
a valve disposed across the aperture.
1 Assignment
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Accused Products
Abstract
A seatbelt retractor includes a spool, a piston, a cylinder, a ring, and a valve. The spool is rotatably connected with a base by the piston and the cylinder. The piston is fixed to one of the base and the spool. The cylinder receives the piston and is fixed to the other of the base and the spool. The piston and the cylinder define a first chamber. The ring is sealed against the cylinder and defines a second chamber connected with the first chamber by an aperture. The valve is disposed across the aperture.
6 Citations
20 Claims
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1. A seatbelt retractor comprising:
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a spool rotatably connected with a base by a piston and a cylinder; the piston fixed to one of the base and the spool; the cylinder receiving the piston, fixed to the other of the base and the spool, defining a first chamber; and a ring sealed against the cylinder and defining a second chamber connected with the first chamber by an aperture; and a valve disposed across the aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A seatbelt retractor comprising:
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a spool rotatably connected with a base by an energy absorber; a housing with the spool rotatably coupled thereto for relative rotation of the spool thereto about an axis of rotation defined by the spool; a base lock disposed between the base and the housing, the base lock in a first condition fixing the base to the housing; and the energy absorber including; a piston fixed to one of the base and the spool, a cylinder receiving the piston and fixed to the other of the base and the spool and defining a first chamber, and a ring sealed against the cylinder and defining a second chamber connected with the first chamber by an aperture; and a valve disposed across the aperture. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification