Abstract: A seat belt retractor comprises a rotatable spool on which seat belt webbing is wound. The spool is rotatable in a webbing withdrawal direction and an opposite webbing retraction direction. The seat belt retractor also comprises a pretensioner actuatable to rotate the spool in the webbing retraction direction and a load-limiting system to limit a load applied to a vehicle occupant by the seat belt webbing. The load-limiting system includes a torsion bar mounted such that the torsion bar is twisted when a load in excess of a predetermined load is applied to the spool in the webbing withdrawal direction by the seat belt webbing. The bad-limiting system also includes a stop assembly actuatable to limit rotation of the spool in the webbing withdrawal direction to a predetermined number of rotations while the torsion bar is being twisted. The stop assembly is actuated upon actuation of the pretensioner.

Abstract: An apparatus (10) for helping to protect an occupant (28) of a vehicle (12) includes an inflatable vehicle occupant protection device (14) configured to be inflated and deployed between a side structure (16) of the vehicle and the vehicle occupant. A deployment sleeve (50) encircles a portion of the protection device. The deployment sleeve (50) includes a rupturable tear seam (54) that absorbs the initial break-out forces of the protection device (14) during the initial stages of inflation and deployment. The tear seam (54) is adapted to rupture after the deployment sleeve (50) absorbs the break-out forces and release the protection device (14) to inflate and deploy to a fully inflated and deployed condition.

Abstract: A vehicle occupant protection device (10) for helping to protect an occupant of a seat of a vehicle includes an inertia member (66) that engages an element (54). The inertia member (66) is movable relative to the element (54) from an unactuated position to an actuated position in response to at least one sensed vehicle condition for activating the occupant protection device (10). A vertical axis (83) extends through the center of mass of the inertia member (66) when the inertia member (66) is in the unactuated position. At least one of the element (54) and the inertia member (66) has at least one planar surface (80) that extends at an angle relative to the vertical axis (54). The inertia member (66) and element (54) are movable relative to one another along the at least one planar surface (80) to place the inertia member (66) in the actuated position to activate the occupant protection device.

Abstract: In a method of folding an airbag (10) for a vehicle occupant restraint system, especially of curtain-type side airbag, to form an airbag package (12?), the airbag (10) is rolled and/or folded to form an airbag roll (12) having a first volume (V1). The airbag roll (12) is fed to a pressing device (14) in which the airbag roil (12) is compressed to form an airbag package (12?) having a second volume (V2) which is smaller than the first volume (V1). The airbag roll (12) and resp., the airbag package (12?) is heated within the pressing device (14) and the airbag package (12?) is cooled, with the airbag package (12?) retaining the second volume (V2) when it is removed from the pressing device (14; 114). The pressing device (14) includes a pressing mold or a molding shaft (18) whose height substantially corresponds to the desired height of the finished airbag packages (12?), a heating unit (20) for heating the airbag packages (12?) and a cooling device (22) for cooling the airbag packages (12?).

Abstract: An air bag module includes an inflatable air bag, an inflator for inflating the air bag, a housing for supporting the air bag and inflator, and a cover for enclosing the air bag in the housing. The cover includes a fabric panel and a steering panel. The fabric panel has a main portion that at least partially envelops the air bag in a deflated and stowed condition and includes a tear seam that is rupturable upon inflation of the air bag to permit the air to deploy from the housing. The steering panel is for directing the air bag to deploy from the housing along a predetermined trajectory. The steering panel includes a panel of reinforcing material that overlies a portion of the fabric panel and is connected to the fabric panel. In a closed condition of the cover, the steering panel is fastened to the housing.

Abstract: An apparatus (10) for helping to protect an occupant (20) of a vehicle (12) having a seat (16 or 22) for receiving the occupant (20) includes an inflatable protection device (14) inflatable from a stored condition in the vehicle (12) adjacent a reaction surface (19, 23, 36) to a deployed condition between the reaction surface and the vehicle occupant (20). The protection device (14) includes a front portion (62) presented toward the seat (22) and an inflatable volume for receiving a penetrating occupant (20?) when the protection device (14) is in the deployed condition. A rear portion (64) connected to the front portion (62) has an inflatable volume spaced from the front portion (62) by a space (110). The front portion (62) is positioned between the vehicle occupant (20) and the rear portion (64) when the protection device (14) is in the deployed condition.

Abstract: A curtain airbag for a motor vehicle includes an inflatable cushion and a protective sheet having an attachment edge attached to the airbag and a free-length extending from the attachment edge. The cushion formed into a folded condition from which it is deployable in a deployment direction, and the free-length of the sheet is positioned adjacent to the deployment direction of the cushion. The airbag is installed in the vehicle to deploy adjacent to a daylight opening of the vehicle. Deployment of the cushion during inflation causes the protective sheet to be drawn along with the cushion in the deployment direction so that the sheet overlays the outboard-facing side of the cushion (between the cushion and the daylight opening) and thereby provides a degree of protection against damage to the cushion that may be caused by, for example, broken window glass.

Abstract: An apparatus (10) helps to protect an occupant (28) of a vehicle (12) that has a side structure (16) and a roof (18). The apparatus (10) includes an inflatable vehicle occupant protection device (14) that has a stored condition for being positioned along the vehicle roof (18). The protection device (14) is inflatable away from the vehicle roof (18) to a deployed condition positioned between the side structure (16) and a vehicle occupant (28). The protection device (14) includes an upper edge portion (30) for being connected to the vehicle along the vehicle roof (18). A lower edge portion (38) of the protection device (14) is folded over onto itself at least once in the stored condition. The protection device (14), when in the stored condition, has a rolled-up configuration such that the folded over lower edge portion (38) occupies a central space (116) bounded by the rolled-up portion (114) of the protection device.

Abstract: An apparatus (12) provides inflation fluid for inflating an inflatable vehicle occupant protection device (14). The apparatus (12) includes a primary housing (20), a primary inflation fluid source (100), a secondary housing (70), and a secondary inflation fluid source (200). The primary housing (20) is constructed from sheet metal by stamping. The primary inflation fluid source (100) is located in the primary housing (20). The primary inflation fluid source (100) is actuatable to effect a primary flow of inflation fluid out of the primary housing (20) to inflate the inflatable device (14). The secondary housing (70) is constructed from sheet metal by stamping. The secondary housing (70) is disposed within the primary housing (20). The secondary inflation fluid source (200) is located in the secondary housing. The secondary inflation fluid source (200) is actuatable to affect a secondary flow of inflation fluid to supplement the primary flow of inflation fluid.

Abstract: An inflatable vehicle occupant protection device (14) for being inflated between an instrument panel (36) and a seat (22) of the vehicle (12) is provided. The protection device (14) includes a front portion (70) that has a panel (72) presented towards the vehicle seat (22), a rear portion (76) adjacent the instrument panel (36), and top and bottom portions (90, 92) interconnecting the front portion (70) and the rear portion (76) to define an inflatable volume (54). A pocket (100) defines an uninflated volume (102) outside of the inflatable volume (54). The pocket (100) is defined by a single panel (180) of the protection device (14). The panel (100) extends along a centerline (162) and includes an extension (180) of material on each side of the centerline (162). The extensions (180) overly one another and are interconnected along a seam (106) to form the pocket (100).

Abstract: A seatbelt latch circuit can include an illumination source configured to illuminate a seatbelt latch in response to a signal. The seatbelt latch circuit can also include a status sensor configured to output a first current if the seatbelt latch is in a removed state, output a second current if the seatbelt latch is in an inserted state and output a third current if the seatbelt latch has a fault. The seatbelt latch circuit communicates with a vehicle electrical system through only two conductors.

Abstract: A seat belt system for restraining movement of an occupant of a vehicle includes a seat belt and a member having an opening through which the seat belt extends. A first inflatable portion of the seat belt extends in a first direction from the member. A second inflatable portion of the seat belt extends in a second direction from the member. A source of inflation fluid is connected in fluid communication with one of the first and second inflatable portions of the seat belt and connected in fluid communication with another of the first and second inflatable portions of the seat belt through the member. The one inflatable portion of the seat belt enables inflation fluid to flow from the source of inflation fluid into the one inflatable portion of the seat belt and to flow from the one inflatable portion of the seat belt through the member into the another inflatable portion of the seat belt.

Abstract: An apparatus (10) for helping to protect an occupant (20) of a vehicle (12) comprises an inflatable vehicle occupant protection device (14) inflatable between a vehicle surface (36) and the vehicle occupant. A vent (110) has at least one opening (114) for releasing inflation fluid from the protection device (14). The vent (110) has an actuated condition and a non-actuated condition. A guide tether (113) is connected to the vent door (120). A vent tether (112) is connected to the protection device (14) and includes a guide (123) connected to the guide tether (113) such that the guide (123) and guide tether (113) are slidable relative to one another. Tension on the vent tether (112) applies tension to the guide tether (113) for actuating the vent (110).

Abstract: An inflator (40) for inflating an inflatable vehicle occupant protection device includes a primary stage (50) actuatable to produce a primary flow of inflation fluid, a secondary stage (100) actuatable to produce a secondary flow of inflation fluid, and a filter chamber (150) into which the primary and secondary flows of inflation fluid are directed. The inflator (40) also includes a secondary filter assembly (120) that permits the secondary flow of inflation fluid to flow into the filter chamber (150) and blocks particulates from flowing from the filter chamber into the secondary stage (100).

Abstract: A seat belt system (20) includes a manifold assembly (60) having an inner housing (68) and an outer housing (70) which extends at least part way around the inner housing. One of the housings (68 or 70) is movable relative to a vehicle with a portion of the seat belt system. The other housing is connected with a source (54) of inflation fluid. In one specific embodiment of the invention, inner and outer housings (68 and 70) of the manifold assembly (60) extend around a portion of an anchor (36) for a seat belt (40). In this embodiment, the housings (68 and 70) have arcuate configurations and have axes which are coincident with a central axis (84) of the anchor (36). In addition to being pivotal relative to each other, the housings (68 and 70) may be movable transversely to each other. A seal (136) may be provided between the housings.

Abstract: An inflatable vehicle occupant protection device (14) is provided for being inflated with inflation fluid towards a seat (22) of the vehicle (12). The protection device includes a front portion (70) presented towards the vehicle seat (22) and helping to define an inflatable volume (54). The front portion (70) includes a pair of extensions (344, 444) overlaid on one another and interconnected to form a pocket (100) defining a collapsed volume (120) outside the inflatable volume (54). The pocket (100) extends horizontally across the front portion (70) and towards the inflatable volume (54). A tether (500) has a first end portion (502) secured to both interconnected extensions (344, 444) and a second end portion (504) secured to a portion of the protection device such that the size of the pocket (100) remains larger than a predetermined amount when the protection device is fully inflated.

Abstract: An apparatus (10) including a protection device (14) has a front panel (74) presented towards an occupant (20, 20a) and is inflatable between a vehicle surface (36, 38) and the occupant (20, 20a). A vent (100) releases inflation fluid from the protection device (14). The vent (100) has an actuated condition and a non-actuated condition prior to deployment of the protection device (14). A vent tether (154, 168) has a first end secured to the vent (100) end a second end having a releasable connection (153) with the protection device (14). A trigger tether (152,162) has a first end connected to the front panel (74) and a second end connected to the protection device (14) at the releasable connection (158). The trigger tether (152,162) Is slackened when the protection device (14) deploys less than a predetermined degree such that the releasable connection (158) remains intact to allow the vent tether (154,168) to place the vent (100) in the actuated condition.

Abstract: An apparatus for helping to protect an occupant of a vehicle includes an inflatable vehicle occupant protection device inflatable between a vehicle surface and the vehicle occupant. The protection device includes a front panel having a portion presented toward the occupant when the protection device is in an inflated condition. A vent includes at least one opening for releasing inflation fluid from the protection device and has an actuated condition and a non-actuated condition. A tether has a first end connected to the vent for actuating the vent and a second end connected to the protection device. A guide member connected to the front panel slidably receives a portion of the tether between the first and second ends. First and second portions of the guide member are releasably connected together to define a slackened portion.

Abstract: An apparatus for helping to protect an occupant of a vehicle includes an inflatable vehicle occupant protection device inflatable between a vehicle surface and the vehicle occupant. The protection device includes a front panel having a portion presented toward the occupant when the protection device is in an inflated condition. A vent includes at least one opening for releasing inflation fluid from the protection device and has an actuated condition and a non-actuated condition. A tether has a first segment connected to the vent and the front panel of the protection device for actuating the vent and a second segment connected to the front panel and a rear portion of the protection device. Tear stitching connects portions of the second segment of the tether to form a slackened portion of the tether. The tear stitching remains intact such that the first segment is slackened and the vent in the non-actuated condition in response to initial deployment of the protection device below a predetermined degree.

Abstract: An apparatus (10) for helping to protect an occupant (20) of a vehicle (12) comprises an inflatable vehicle occupant protection device (14) inflatable between a vehicle surface (36) and the vehicle occupant. A vent (110) has at least one opening (114) for releasing inflation fluid from the protection device (14). The vent (110) has an actuated condition and a non-actuated condition. A guide tether (113) is connected to the vent door (120). A vent tether (112) is connected to the protection device (14) and includes a guide (123) connected to the guide tether (113) such that the guide (123) and guide tether (113) are slidable relative to one another. Tension on the vent tether (112) applies tension to the guide tether (113) for actuating the vent (110).