Abstract: Retightener with a pyrotechnic propellant charge for automatic safety-belt wind-up devices having an energy converter, wherein in the event of danger the explosive pressure of the ignited propellant charge acts on a pullout element tightening the safety belt around the body of the vehicle passenger to be protected via a liquid buffer arranged between the propellant charge and a pull-back element. In accordance with the invention a turbine housing is disposed around the turbine wheel with a hollow space on one side between the turbine wheel and the wall of the housing to form a turbine pressure chamber. A receptacle containing liquid medium has its outlet opening into the turbine pressure vessel. The outlet of the receptacle is aligned substantially tangentially to the turbine wheel.

Abstract: A safety belt wind-up roller includes a winding shaft for a safety belt, a rewind spring operatively connected to the winding shaft for rewinding the safety belt after it has been withdrawn, a compensating device for equalizing the restoring force of the rewind spring as the restoring force increases with increasing withdrawal of the safety belt, and a coupling member operatively associated with the winding shaft for rotation therewith, and the compensating device has a compensating member in the form of a roll spring mounted axially parallel to the winding shaft and having a radially outer end forcibly engageable with the coupling member during rotation of the winding shaft over a predetermined rotary angle as the safety belt is being rewound.

Abstract: Limit switch, particularly for use as a lock switch for safety belts, composed of a flat housing, spaced contact elements in the housing, a switching lever formfittingly secured on one side of the housing with the other side free to move, a spring-loaded switch element on the free end of the lever to open and close the contacts, the side wall of the housing acting as a stop to limit movement of the lever, a cover with an opening for the housing, and a tripping pin attached to the lever extending through the opening, which pin is activated by for example closing a seat belt by a sliding tongue inserted in the housing thus moving the switch element to open or close the contacts.

Abstract: An automatic roll-up device for safety belts in motor vehicles with a winding shaft supported, with bearing play, in a bearing block and means to reduce undesirable noises due to rattling because of the play, involving a support roll which is supported resiliently in the axial direction and loads the winding shaft in the radial direction.

Abstract: A roller blind with a safety device for arresting accidental unrolling of the blind in which a shaft butt is coupled to one end of the winding shaft, a drive disk disposed on the shaft butt, a pawl shaped inertial member pivotally mounted on a pin extending from the drive disk, and a housing having internal teeth, around the disk and inertial member. The inertial member will not change its position relative to the drive disk but with increased unrolling velocity does change its position and the pawl engages the internal teeth of the housing to arrest unrolling of the blind.

Abstract: Lock for motor vehicle safety belts with a metallic base plate which has a recess in which a latching mechanism is supported so that it can be swung about an axis extending transversely to the insertion direction of a plug-in blade from the closed position by a pushbutton against the action of a spring. With insertion of the plug-in blade the locking mechanism snaps with a latching projection into an undercut of the plug-in blade to the closed position. The recess in the base plate is formed by punching free a lug, which bent out of the plane of the base plate is unitary with and spaced from the base plate forming a guide for the plug-in blade. Manufacture of such locks is simpler with savings in material. In addition the locks are lighter in weight.

Abstract: A swinging fitting for safety belts having a belt holder arm rotatable about a bearing pin and a tilting spring urging the belt holder arm in rest position when the belt is not in use. An intermediate member is placed in locking engagement with the bearing pin. The intermediate member engages one end of the tilting spring and the other end of the spring is engaged by the holder arm.

Abstract: A roller blind with a safety device for arresting accidental unrolling of the blind in which a concentric blocking shaft is affixed to the winding shaft, a gear fastened to the blocking shaft, a pivotally mounted pawl with a spring urging the pawl in contact with teeth of the gear, a gate normally holding the pawl out of contact with the teeth, an inertial member supported relatively movably with respect to the blocking shaft whereby upon increased unrolling velocity the inertial member will change its relative movement and activate the gate member to release the pawl and permit it to engage the teeth of the gear and arrest unrolling of the blind.

Abstract: A winding-up device for a safety belt in which a winding shaft connected to one end of the belt is normally freely rotatable in both pay-out and take-up direction in a housing. A locking arrangement is provided for locking the shaft to the housing and is operated in response to acceleration of the shaft in pay-out direction. Further means can be provided to operate the locking device in response to acceleration of the housing or of the vehicle in which the housing is mounted.

Abstract: A closure, or latch, especially for passenger seat belts in which a housing on the end of one belt portion has a slot for reciving a tongue on a member on the other belt portion. Within the housing are roller bodies engaging each other and spring biased toward the tongue. The tongue is provided with notch means for engagement by a roller body to effect latching while a disengaging member moveably carried by the housing is operable for moving the roller bodies into disengaging position.

Abstract: An inertia responsive control device in which a ball is provided which is supported by a recess therebeneath which is smaller in the lateral direction than the ball. A control element is pivotally supported at a point spaced from the ball and extends over and rests on top of the ball, preferably by way of a downwardly concave region. Movement of the ball laterally of the recess is limited so the center of gravity of the ball remains within the limits of the recess. Upward tilting of the control element by movement of the ball laterally of the recess is employed to initiate a control function, such as the locking of a safety belt.

Abstract: A device responsive to acceleration in any direction in which a ball rests on an upwardly facing seat in a housing and is movable laterally on the seat when acted on by a predetermined force of acceleration. When the ball moves laterally on the seat an electric circuit is completed which can be employed for signalling or control purposes.

Abstract: A roller system for a safety belt with a winding-up shaft coupled to a return spring and connected to a belt end while being journalled in a housing, the roller system also comprising a locking mechanism. The winding-up shaft or a compensating sleeve arranged thereon has its outer contour within the region of its connection with the belt so designed that the belt when being wound off or on describes the path of an Archimedes spiral.

Abstract: A winding-up device for a safety belt, in which a spool to which one end of the belt is connected is journaled in a housing with a spring biasing the spool in take-up direction. The belt can be freely drawn outwardly from the housing up to a limit acceleration. When a limit acceleration is reached, an inertia device interposed between the spool and the housing engages and prevents further rotation of the spool in the housing in pay-out direction.

Abstract: A safety belt pull-in device comprising a reel having one end of a first safety belt section connected thereto, whereas the other end of the first safety belt section is connectable to a second or stationary belt section. The first belt section, which when not in use, is wound upon the reel, is operatively connected to a motor such as a fluid-operable motor or an electric motor which so controls the reel that when the first safety belt section is being unwound from the reel by pulling the safety belt, is being pulled off the reel at at least nearly even pull.

Abstract: A device for blocking the shaft of a safety belt mechanism in which the blocking of the shaft is initiated in response to acceleration of the shaft in pay-out direction. An inertia responsive disc element is mounted on the shaft and movement thereof on the shaft initiates blocking of the shaft. To augment the inertia effect a magnet adjacent the disc provides a retarding effect thereon by the magnetic field from the magnet or by eddy currents in the disc induced therein by the field.

Abstract: A closure, or latch, especially for passenger seat belts in which a housing on the end of one belt portion has a slot for receiving a tongue on a member on the other belt portion. Within the housing are roller bodies engaging each other and spring biased toward the tongue. The tongue is provided with notch means for engagement by a roller body to effect latching while a disengaging member moveably carried by the housing is operable for moving the roller bodies into disengaging position.