Abstract: A seat belt tightener has an electrical tightening drive that can be operated in dependence on sensor signals of sensors assessed in an evaluating device. The sensors detect specific vehicle dynamic conditions and transmit electrical indicating signals that are proportional to the detected condition to the evaluating device. The evaluation device compares the signals with allocated threshold values to determine whether or not a potential crash situation is present. Should a potential crash situation be present, the electrical tightening drive is controlled accordingly.

Abstract: A rewind spring in a cassette for a seat belt retractor is assembled by first placing a mechanism cover on a winding jig. An arbor is fitted to a winding shaft of the jig. One end of a coiled metal bank spring is then fixed to the spring arbor. The band is then wound onto the arbor in the mechanism cover and a spring cover is fitted to the mechanism cover. Finally, a locking clip is attached to the spring cover to lock the arbor against rotation. A spring arbor for use in the cassette has a generally cylindrical shape and an axially extending slot for receiving an end of the spring. A step is provided in the profile of the cylindrical outer surface of the arbor in the region of the slot to compensate for the thickness of the band wound thereon.

Abstract: A heated steering wheel having a heated element that provides a uniform distribution of heat throughout the rim of the steering wheel. The heating element is a thin fabric woven made from nylon coated with silver and has a constant temperature coefficient. The heated steering wheel provides a foam layer surrounding the heating element, and this layer prevents the leather wrapping from being uneven due to the presence of the bus bar. The heating element can also be used in a steering wheel having a wood veneer shell.

Abstract: A seat belt retractor has a belt reel that is rotatably mounted on a frame and on which a seat belt can be wound and unwound. A motive spring biases the belt reel in the winding direction. An electric motor adjusts the spring force of the motive spring can be adjusted and/or a torque produced for tightening the seat belt. The torque can be transmitted to the belt reel by a clutch. The deformation of a deformable spring element brings the clutch into an engaged state. The spring element is held on one end of the spring by a holding device actuated by inertial force, at least for initiating its deformation.

Abstract: A steering wheel is produced from injection molding of a foamed thermoplastic elastomer. The thermoplastic foam material can produce desirable characteristics for both the rim and the airbag cover. The rim of the steering wheel has good wear characteristics and a targeted compressibility or “feel” while the airbag cover has the sought-after strength across a large temperature range and exhibits very little compliance. The thermoplastic foam material is also beneficial because it has a non-olefinic foam carrier, such as polyvinyl acetate, which does not degrade the adhesive used to attach a cushion and/or a outside wrap to the steering wheel rim.

Abstract: An apparatus for tensioning a seatbelt has a piston that is driven in a guide tube and is connected to the belt webbing of the seatbelt via a traction cable and with a cable guide for the traction cable. The traction cable acts on one end of the belt webbing of the seatbelt and is looped around the cable guide 180°. The portion of traction cable extending between the cable guide and the belt webbing is guided substantially parallel to the axial direction of the guide tube.

Abstract: A reed switch in a solid plastic body is positioned by a clip adjacent to a fluid container. A change in fluid level opposite the reed switch moves a magnet connected to a float, turning the reed switch on or off. Glass filled polyester is injected into a die which surrounds the reed switch supported on electrical plug blades. The reed switch has high stiffness leads positioned on the blades, and is oriented within the mold so the injected plastic flows along the glass tube of the reed switch, minimizing stresses on the reed switch, which could result in the reed switch becoming crack and/or broken. The molded plastic body incorporates an integrally formed clip arm that functions to position and hold the plastic body onto a larger structure. The magnet and float may move in a tube, may pivot, or slide along rails in response to a change in fluid level.

Abstract: An airbag arrangement comprising: an airbag; a housing (1), formed of plastics material, for containing the airbag in a deflated, folded condition; a cover (5), formed of flexible material, and attached to the airbag housing (1) by a seal around a substantial portion of the periphery of the housing (1). The seal may be by heat or pressure sensitive glue, by ultrasonic or vibration welding or by deformable lugs (9). This arrangement is cheaper to produce and quicker to assemble, and has the advantage of being generally tamper-proof, since any tampering with the package will be immediately evident from detachment of the cover or tears therein.

Abstract: A housing (2) for mounting a gas generatot (7) in a pyrotechnic pretensioner, the housing comprising a hollow container for supporting the gas generator, the container having an opening through which the gas generator (7) may be inserted and having a tapered end section (20) arranged to be adjacent and to co-operate with a gas outlet end of the gas generator to provide a seal around the gas outlet, and the hpusing having a cover (8) for closing the container opening, the cover having a tapered wedge member (22) extending into the container in use at the opposite end to the tapered end section (20) to urge the gas generator (7) towards the tapered end section (20) of the container, in a close fit manner. The wedge(22) is preferably integral with the housing cover (8). This housing makes fitting of the gas generator easier and improves the seal between it and the pretensioner thus improving performance.

Abstract: A method of folding an air bag, the air bag having facing first or upper and second or lower panels that are joined together, a portion of each panel cooperating to form a neck or inlet which is adapted to receive an inflator, the method comprising the steps of: a) arranging the first and second panels to be generally flat on a work surface with the a first panel overlaying a second panel; b) defining a first fold or tuck line that extends across the first panel; c) forming a double tuck in both the first and second panel, the first tuck located on a preferred portion of the first and second panels generally at the first tuck line and the second tucks generally located near the bottom of the air bag; the tucking of the panels lowering the height of the air bag in relation to its laid-out configuration in step a as well is its relating to the first tuck line; d) reducing the width of that portion of the air bag that extends from the second tuck to the top of the air bag; e) folding or rolling the reduced

Abstract: A modular steering wheel and airbag combination includes an airbag assembly, a steering wheel assembly and a separate hub plate. The combination is preassembled as a unitary component which can easily be attached to a steering column shaft. A taper or wedge lock is formed between the steering wheel armature and hub plate. The steering wheel assembly includes a plurality of ribs or spokes extending from an upper rim portion of the steering wheel assembly and a ring portion connecting the spokes to provide structural integrity and support to the steering wheel assembly. The airbag assembly includes a retaining ring as part of an airbag component which provides easy and secure attachment of the airbag component to the hub plate. The inventive steering wheel and airbag combination comprises a structure for securing the combination to a steering column shaft. The structure includes a worm gear and complementary gear. The complementary gear may be a helical gear.

Abstract: A vehicle occupant safety device (20) comprising: an air bag (70) initially in a folded configuration and when inflated by inflation gases expands to an inflated configuration to protect the occupant; an inflator (50) for providing inflation gases to inflate the air bag; a shroud (80) comprising a plurality of frangible straps, preferably loosely positioned about the exterior of the folded air bag for controlling the trajectory of the inflating air bag by initially restricting the forward extension of the air bag by interaction with the shroud (80) and thereafter directing the air bag to inflate along a passageway defined by the shroud which is oriented at a downward angle relative to the occupant. Once the air bag exits the shroud it is free to inflate laterally and upwardly to protect the occupant. In one embodiment the shroud includes a tearable strap (140).

Abstract: A method for assembling seatbelt webbing with a sill-end bracket using an apparatus for feeding seatbelt webbing through a sill-end bracket has a form-feeding member with a tapered channel for receiving one end of a length of seatbelt webbing on an assembly line. A webbing pull-through member is fed through the sill-end bracket and engages one end of the webbing. The pull-through device is then drawn back through the sill-end bracket thus drawing the webbing through the tapered channel of the form feeding member.

Abstract: A seat belt retractor has a winding shaft for winding a seat belt. A motive spring biases the winding shaft in the winding direction of the seat belt. A drive unit provides at least partial relaxation of the motive spring when the seat belt is at least partially unwound. A bridging device can also be provided, by means of which the winding shaft can be driven more directly by the drive unit during a process of winding the seat belt.

Abstract: An improved safety belt buckle for use with a buckle end pretensioner. The buckle for a vehicle safety restraint belt comprises a latch (5) moveable between a tongue engaging position in which the buckle is fastened and a tongue disengaged position in which the buckle is open, a button (7) moveable in the direction of tongue insertion to lift the latch against the action of a biasing spring (9), into the disengaging position. A securing means (10) in the form of a slidable plate is mounted in the buckle frame and is moveable between a position in which it restrains a movement of the latch into the disengaging position and a position in which it does not restrain movement of the latch.

Abstract: A seat belt retractor has a frame, a spool rotatably mounted to the frame, a spool locking device for preventing rotation of the spool. An actuator actuates the spool locking device and has a support carrying an inertia mass and a pawl. The inertia mass is designed to move from an initial position to an actuating position to bring the pawl into engagement with a ratchet on the spool. Engagement of the pawl with the ratchet actuates the spool locking device. The support is arranged to pivot so as to adjust the distance between the pawl and the ratchet. In that way the position of the pawl can be adjusted to provide an optimum gap between the pawl tip and the ratchet on the spool.

Abstract: A headrest on a backrest of a vehicle seat is supported on a rocker that is pivotal round a pivot axis fixed on the backrest frame. The headrest is adjusted by an adjusting device that transmits an adjusting movement to the rocker via a movement-transmitting device.

Abstract: An air bag (22) having: an inflatable cushion portion (30) and a neck portion (32) in communication therewith, the neck portion defines a receiving opening to receive inflation gas, received from an inflator, to inflate the cushion portion (30). The air bag is made from flexible material and a retainer member(s) (70a,b; 100) and is preferably sewn to at least a part of the neck portion to reinforce the neck portion and to reduce the flexibility of the neck portion. The invention further includes an air bag module that utilizes the above air bag. The module includes a housing and an inflator. The housing has grooves (50a,b) for receiving a first edge of a retainer member and further includes a holding member (41a,b) formed as part of a wall of the housing (24) and which is bent or crimped over to hold a second edge of the retainer member.

Abstract: A cover for a parking brake has a tubular handle body that is arranged coaxial to a lever of the parking brake and is fixable to it by fastening dowels that are positioned at a back end. A finishing back ring nut is inserted onto the back end of the handle body. An adapter with an external shape and size equal to the internal ones of the handle body and an internal hole with a shape and size varying with the external shape and size of the brake lever. A fore finishing ring nut is inserted onto the adapter.