A vehicular seat belt device includes a first pretensioner provided in a retractor and configured to apply tensile force to a shoulder belt portion of a webbing, a second pretensioner provided in a belt anchor part and configured to apply tensile force to a lap belt portion of the webbing, a third pretensioner provided in a side portion of the vehicle seat opposite to the belt anchor part and configured to apply tensile force to the lap belt portion via a buckle, and a controller. The controller is configured to activate the first pretensioner at a time of predicting vehicle collision, and activate the second pretensioner and the third pretensioner after detection of collision.

A vehicular seat belt device includes a first pretensioner provided in a retractor and configured to apply tensile force to a shoulder belt portion of a webbing, a second pretensioner provided in a belt anchor part and configured to apply tensile force to a lap belt portion of the webbing, a third pretensioner provided in a side portion of the vehicle seat opposite to the belt anchor part and configured to apply tensile force to the lap belt portion via a buckle, and a controller. The controller is configured to activate the first pretensioner at a time of predicting vehicle collision, and activate the second pretensioner and the third pretensioner after detection of collision.

A retainer apparatus including a first retainer portion, a second retainer portion, a wireless transceiver, and a sensor contained within at least one of the first retainer portion and the second retainer portion. The retainer apparatus includes the first retainer portion configured to be slidably attached to a first harness strap and a second retainer portion configured to be slidably attached to a second harness strap. The first retainer portion is removably attached to the second retainer portion. The sensor is configured to detect the first retainer portion being disconnected from the second retainer portion and generate a warning signal. The wireless transceiver is configured to wirelessly transmit the warning signal to a controller in a vehicle to activate an audible warning alert to warn a user in the vehicle of the first retainer portion being disconnected from the second retainer portion.

A retainer apparatus including a first retainer portion, a second retainer portion, a wireless transceiver, and a sensor contained within at least one of the first retainer portion and the second retainer portion. The retainer apparatus includes the first retainer portion configured to be slidably attached to a first harness strap and a second retainer portion configured to be slidably attached to a second harness strap. The first retainer portion is removably attached to the second retainer portion. The sensor is configured to detect the first retainer portion being disconnected from the second retainer portion and generate a warning signal. The wireless transceiver is configured to wirelessly transmit the warning signal to a controller in a vehicle to activate an audible warning alert to warn a user in the vehicle of the first retainer portion being disconnected from the second retainer portion.

A dual-web retractor includes a frame having spaced-apart sidewalls, a spool rotatably mounted between the sidewalls, a pair of engagement members configured to be releasably engaged to one another, and a single web having opposite ends each coupled to a different one of the pair of engagement members and a portion of the single web between the opposite ends affixed to the spool to define a first web section extending from one end of the frame between the spool and one of the pair of engagement members and a second web section extending from an opposite end of the frame between the spool and the other of the pair of engagement members. Rotation of the spool in a web take up direction alternatingly wraps the web sections onto the spool and rotation of the spool in a web pay out direction alternatingly unwraps the web sections from the spool.

A dual-web retractor includes a frame having spaced-apart sidewalls, a spool rotatably mounted between the sidewalls, a pair of engagement members configured to be releasably engaged to one another, and a single web having opposite ends each coupled to a different one of the pair of engagement members and a portion of the single web between the opposite ends affixed to the spool to define a first web section extending from one end of the frame between the spool and one of the pair of engagement members and a second web section extending from an opposite end of the frame between the spool and the other of the pair of engagement members. Rotation of the spool in a web take up direction alternatingly wraps the web sections onto the spool and rotation of the spool in a web pay out direction alternatingly unwraps the web sections from the spool.

A torsion shaft for a seat belt retractor assembly, the torsion shaft being connectable at a first location to a spool for receiving a seat belt and connectable at a second location to a locking mechanism, the first and second locations being spaced apart along a length of the torsion shaft, wherein the torsion shaft is configured to deform when a torsion force is applied between the first and second locations during an impact event, wherein the torsion shaft comprises a cavity and a fluid is provided in said cavity so as to support the torsion shaft as the torsion shaft deforms during the impact event.

A torsion shaft for a seat belt retractor assembly, the torsion shaft being connectable at a first location to a spool for receiving a seat belt and connectable at a second location to a locking mechanism, the first and second locations being spaced apart along a length of the torsion shaft, wherein the torsion shaft is configured to deform when a torsion force is applied between the first and second locations during an impact event, wherein the torsion shaft comprises a cavity and a fluid is provided in said cavity so as to support the torsion shaft as the torsion shaft deforms during the impact event.

A retainer apparatus including a first retainer portion, a second retainer portion, a wireless transceiver, and a sensor. The sensor includes a first sensor portion physically contained within the first retainer portion and a second sensor portion physically contained within the second retainer portion. The first retainer portion is removably attached to the second retainer portion. The sensor is configured to detect the first retainer portion being disconnected from the second retainer portion and generate a warning signal. The wireless transceiver is configured to wirelessly transmit the warning signal to a controller in a vehicle to activate an audible warning alert to warn a user in the vehicle of the first retainer portion being disconnected from the second retainer portion.

A retainer apparatus including a first retainer portion, a second retainer portion, a wireless transceiver, and a sensor. The sensor includes a first sensor portion physically contained within the first retainer portion and a second sensor portion physically contained within the second retainer portion. The first retainer portion is removably attached to the second retainer portion. The sensor is configured to detect the first retainer portion being disconnected from the second retainer portion and generate a warning signal. The wireless transceiver is configured to wirelessly transmit the warning signal to a controller in a vehicle to activate an audible warning alert to warn a user in the vehicle of the first retainer portion being disconnected from the second retainer portion.