Abstract: The cable braking member for the drive of a safety belt retightener consists of three triangularly arranged stud-shaped obstructions between which the pulling cable is led. A progressing increase of the restraining force generated by the cable braking member is achieved in that the contacting faces of the stud-shaped obstructions are inclined at an angle of inclination of less than 90.degree. to the guide plane of the pulling cable.

Abstract: In the dish-shaped hub body of a steering wheel between two concentric cylindrical walls and a bottom wall connecting them an annular cavity is formed into which the propellent charge of a gas generator is introduced. This cavity is sealed by an outwardly arched closure plate provided with gas passage openings. An inflatable gas bag in the form of a hose ring is secured with its opening edges to a support plate which is secured at its peripheral edge to the steering wheel body. A separate gas generator housing can be dispensed with.

Abstract: The bottom wall (12) of a rectangular housing (10) comprises a trough-like depression (14) which is sealed on the inside of the housing (10) by a cover (22) provided with a securing flange (22A). A propellant charge (42) is introduced into the trough-like depression (14). The housing (10) is sealed at its front side by a covering formed by two pivotal foamed material plates (30, 32). In the interior of the housing (10) a folded gas bag (26) is accommodated which is inflated by the gases forming on combustion of the propellant charge (42) and flowing through gas passage openings of the cover (22) into the interior of the gas bag (26). Since the propellant charge (42) can be introduced directly or using a simple capsule housing of plastic into the interior of the trough (14) a separate and involved gas generator housing can be dispensed with.

Abstract: A gas generator for a tightener in a safety-belt retractor comprises a cylindrical housing secured at one of its ends to a transition member between the housing of the retractor and a piston/cylinder drive of the tightener. At its other end the housing has a radial collar. The housing accommodates a propellant charge with a detonator. A hollow sleeve is inserted into the housing and has an outer diameter adapted to the inner diameter of the housing and an inner diameter adapted to a cylindrical capsule housing. The capsule housing has a bottom enclosing the propellant charge and is connected to a cylindrical base member which is inserted into the housing. The base member has a radial face bearing on the radial collar of the housing. The sleeve has a radially inwardly directed collar on the inner surface of which the bottom of the capsule housing bears.

Abstract: A bearing for the rotatable mounting of a control disc in an automatic safety belt retractor is disclosed. The relative rotation between the belt reel and the control disc activates an emergency blocking mechanism. In order to reduce the axial dimension of the control disc, the bearing comprises a bearing journal inserted into a central bearing opening of a hub of the control disc, and one of the axial ends of the opening is widened to receive an insert having a bearing bore receiving the adjacent axial end of the bearing journal. The bearing journal has a radial shoulder and the insert has detent elements engaging behind the radial shoulder.

Abstract: The belt tightener on a safety belt retractor comprises a pulling cable which is coupled to a drive source and which engages the periphery of a pulley. The pulley is non-rotatably connected to a gear. The gear is mounted rotatably on a swivel lever or crank which in turn is pivotally mounted on a side wall of the retractor frame. A shear pin has two portions of different cross sections and maintains the swivel crank in an initial position such that the gear is out of engagement with a pinion forming an extension of the belt reel. At the same time the shear pin holds the gear against rotation on the swivel crank. In initiation of a belt tightening operation firstly the weaker dimensioned portion of the shear pin is overcome so that the drive gear is moved into engagement with the pinion. Only thereafter is the second portion of the pin sheared off so that the gear becomes rotatable.

Abstract: A safety helmet has a shell with a visor movably supported on both sides. By means of a bearing pin and a control pin guided along cam surfaces, the visor can be positioned over the face opening of the helmet or swung upwardly. Detents for the pins define positions for the visor including a flush mounting in the face opening, a venting position at which the visor is spaced from the helmet shell but remains over the face opening, and an upward position. These positions are preferably achieved by means of a control disc having displacement and rotation defining detents, engaging the bearing and control pins on each side of the visor.

Abstract: A safety helmet includes a helmet shell, at least one accessory, and at least one plug connection for connecting the accessory to the helmet shell being detachable with a given opening force, each plug connection including an elastic plug having a socket formed therein and being fixed in an opening formed in the helmet shell, and a plug nipple fastened to the accessory being insertible and lockable in the socket.

Abstract: The clamping roller for a belt webbing clamping device consists of two identical plastic mouldings and a rolled steel sleeve inserted into a recess thereof. Said steel sleeve surrounds a pivot bearing pin of steel inserted into a bore of the plastic mouldings. This pivot bearing pin and the rolled steel sleeve bear on each other along a zone parallel to the axis of the clamping roller and form a composite member of high strength.

Abstract: The drive means of the passive safety belt is provided with a coupling which is disposed between the takeoff side of the worm gearing and a cable drum (28) and which is formed by a toothed slider (20) and two internally toothed rings (29, 30) at the inner face of the cable drum (28). Said coupling is controlled by an inertia disk (25) in whose radial grooves (23, 24) guide studs (21, 22) of the toothed slider (20) are guided slidingly. The coupling is not engaged until an adequately high drive speed is reached, said engagement being effected in that the toothed slider (20) is moved radially outwardly and with one of its coupling teeth (31, 32) comes into engagement with the corresponding internally toothed ring (29, 30). When the coupling is disengaged the end fitting of the safety belt can be easily displaced by hand.

Abstract: In a normal three-point automatic safety belt system the webbing is generally led from an end fitting secured to the vehicle over a guide fitting to a belt takeup means which is disposed on the same side of the vehicle seat as the guide fitting. Along the webbing a slide buckle can be displaced which can be releasably locked to a belt lock which is secured on the opposite side of the vehicle seat to the vehicle. When the slide buckle is inserted into the webbing it divides the latter into a lap portion and a shoulder portion. To secure a child's seat on the vehicle seat by means of such a normal three-point automatic safety belt system by the lap portion bearing on the child's seat the safety belt system is equipped with an additional clamping means which permits tightening of the lap portion but offers resistance to loosening of the lap portion.

Abstract: The feed device for a safety belt system for motor vehicles has an automatic belt roll-up, a belt lock and a locking tongue, a feed ram being movable, through a drive device, in two opposite directions, which at the free end is loosely coupled with the section of the belt band having the locking tongue, which moves the belt band and the locking tongue, for the putting on of the belt, into a convenient position in front of or to the side of the vehicle's passenger, and then back again into the original position.To make possible the installation of the feed device even into a narrow space, it is provided, according to the invention, that a ram receiver is present, of which the projection length perpendicular to the base plane of the vehicle, is much less than the length of the feed distance through which the feed tappet must pass.

Abstract: Safety belt roll-up device having a housing and a one-piece belt carrier. The housing has a base plate with two side walls extending from the base plate. At least one of the two side walls can be set at an angle and bent into a position in which both side walls are parallel. Each side wall has an opening through which a free end of the one-piece belt carrier extends. The one-piece belt carrier is in the form of a single piece including a belt shaft and a belt reel with a reel flange at each end of the belt reel. The belt reel has a diameter greater than the diameter of the opening in the side wall. The belt carrier is inserted between the side walls bent apart in V-shape. The belt carrier is held at the height of the openings and the end walls moved together to a parallel position.

Abstract: An adjustable safety belt anchorage is disclosed which includes a guiding rail adapted to be mounted in a motor vehicle, a carriage longitudinally slidable in first and second directions along the guiding rail, the guiding rail having longitudinally spaced locking openings, a locking member movably mounted on the carriage for selective engagement with the spaced locking openings, the carriage having support means for the safety belt, an actuator member movable relative to the carriage for a limited distance in the first and second directions, mechanism for converting relative movement between the actuator member and the carriage in a selected one of the first and second directions into movement of the locking member away from one of the locking openings, and the actuator member and carriage being interconnected for moving the carriage along the guiding rail in the selected one of the first and second directions in response to continued movement of the actuator member in the selected one of the first and secon

Abstract: A safety belt retractor has a belt spool which is rotatably supported on a frame. A belt slack retightening mechanism is positively coupled to the belt spool to drive the belt spool in a direction upon occurrence of excessive deceleration of the vehicle. A blocking device is operable to block the belt spool from rotation. A control apparatus is provided to control the blocking device in response to acceleration of belt webbing withdrawal from the belt spool.The control apparatus includes a control disc which is supported for limited relative rotation with respect to the belt spool. An inertial disc is coupled with the control disc for rotation therewith by a coupling. The coupling permits rotation of the inertial disc with respect to the control disc only upon the exceeding of a predetermined retightening rotational acceleration of the belt spool and control disc.

Abstract: A turning fitting for a safety belt includes a pair of leg sections which extend downward from a mounting section and are connected with opposite end portions of a turning section. The turning section includes a plastic casing. The plastic casing has a surface covered with a coating of low friction material. In one specific instance, the low friction material coating was a metal coating which was deposited by vapor deposition.

Abstract: A driving device having a piston pyrotechnically driven in a cylinder, the piston being connected by pulling means to an element to be driven, the cylinder having a stroke limit stop at a rear end thereof, as viewed in driving direction of the piston in the cylinder, includes damping means disposed between the piston and the stroke limit stop of the cylinder, the damping means braking the piston in a predetermined manner upon failure of the pulling means.

Abstract: Belt lock for a safety belt, especially for arrangement on a back seat in a motor vehicle, with flexible pulling means which are fastened to a lock housing fastened to a flexible fitting fixed to a vehicle part, for instance, to the seat frame, and which holds the belt lock which is not connected to the safety belt in a predetermined, easy-to-grab position. The pulling means are connected firmly and undetachably to the metallic lock frame within the lock housing.

Abstract: Coupling system for the winding shaft of a safety belt with a retightening device, with flexible tension means which is in functional connection with a driving device, for instance, a power accumulator, and with a tension means roll connected to the shaft to be driven. The tension means is looped around the tension means roll firmly connected to the shaft to be driven, with radial play preferably several times. The free end section of the tension means is subjected by a brake element to a predetermined braking force. Upon activation of the driving device, the looping section of the tension means is contracted and is coupled by the loop friction to the tension means roll.

Abstract: Lock for safety belts with a belt lock and an insertion tab which can be detented at a latch, which latch can be moved transversely to the insertion direction when the insertion tab is inserted, preferably by the latter itself into the open position against a spring force. The latch can be brought out of detent engagement with the insertion tab by a manual pressure member. A run-up bevel is provided at the abutting edges of the latch and the insertion tab. The latch can be moved into the unlatched position only in part by the pressure member and ultimately by the insertion tab itself. The run-up bevel is at the abutting edge of the insertion tab cooperating with the latch with the height of the contact area for the latch smaller than the thickness of the insertion tab.