Abstract: The belt system, advantageously including a retractor (13) mounted on the seat (1) and directly involving the lap belt section (8), comprises an attachment buckle (7) connected to its anchor point (10) by an expandable link device (11), which normally permits a range of movement of buckle (7) away from anchor point (10) or toward the latter (for example by means of a return spring), but provided with means to oppose the extraction of the buckle (7) under predetermined conditions of acceleration of the vehicle and/or of the belt.

Abstract: Apparatus to indicate the load on a restraining device subject to tensile loading, especially for a safety belt, the restraining device having an opening for communication with a restraining element, such as a seat belt, and being formed of two parts having different tensile strengths. The parts are displaceable with respect to each other upon loading of the restraining device in tension above a predetermined amount and one of the parts is provided with an indicator sign which becomes visible upon such displacement.

Abstract: A locking mechanism for seat belt retractors responding to movement or accelerations of a vehicle, including a freely movable inertia body and a pivotable pawl, in which a mechanism on the pawl can engage the inertia body and movement of the inertia body is limited by a means arranged next to the inertia body.

Abstract: The invention relates to a rapid acting automatic belt arresting means. A housing (10) for a vehicle inertia sensor is integral with a control part (3) which is mounted pivotably on belt shaft (1). When pawl (11) is moved, either by the inertia sensor or a belt sensitive mechanism (18, 21), to engage a locking gear (5) connected to shaft (1), further rotation of the shaft (1) pivots control part (3) which thereby moves a locking pawl (6) into locking engagement with locking gear (5) preventing further belt withdrawal.

Abstract: A safety belt buckle including a latch for engagement with an opening in a tongue, an ejection spring for the tongue and a bias spring for a push button that can be brought into engagement with the latch, wherein the latch can pivot on an axis approximately perpendicular to the direction of insertion of the tongue, the latch being biased in the unlocked position by the force of the bias spring, and when the bias spring is at least partially extended, the latch is maintained in locking engagement with the tongue by a reinforcing member that moves together with the push button.

Abstract: A vehicle sensitive seat belt retractor including two locking pawls acting on a single ratchet wheel and operable in response to actuation of a vehicle sensitive sensor. The pawls are positioned relative to the sensor so that the force required to lock the retractor is uniform regardless of the direction of the acceleration. Preferably, the support for the sensor includes two mutually adjustable parts, one of which carries a ring which supports the sensor, which is preferably a ball, and the other is connected to the retractor housing.

Abstract: In a device for reducing spring tension in a belt strap, particularly in a belt retractor for safety belts in motor vehicles, comprising a winding shaft and a return spring secured in a housing, the device including means for producing a force acting against the tension of the spring, the means being couplable with the winding shaft through a coupling means, the improvement comprising a spring housing mounted so as to be freely rotatable on the shaft, a pivot bearing of a wheel rotatably disposed on the spring housing, the wheel being in driving arrangement through the coupling means with the winding shaft and with the retractor housing, and a release member operable for releasing the coupling means.

Abstract: This invention relates to a locking device for a safety belt retractor comprising a reel shaft and a ratchet wheel provided with locking teeth and engageable with pawls, characterized by the fact that a synchronization disk (5) bearing actuating parts (16) engageable with a pawl (13) and provided with at least a first disengagement device (9), and an axially undisplaceable ratchet wheel (4) with at least a complementary second disengagement device (8) are disposed on said reel shaft (1), that when the synchronization disk (5) and the ratchet wheel (4) rotate relative to each other, at least a part of the synchronization disk (5) is deformed or displaced to actuate locking by the pawl (13) and that actuation chronologically precedes locking.

Abstract: An acceleration-sensitive device, particularly a seat belt retractor locking device responsive to vehicle acceleration, comprising a rollable, fully movable inertia member supported in a depression provided in a support member, and an actuator means disposed above the inertia member and engageable with a locking means provided in said device, the actuator means being provided with a depression facing the inertia member, the improvement comprising the depression on the support member and the depression on the actuator means being in the form of a ring facing towards the inertia member, the inertia member having an approximately spherical shape, and the support member extending laterally outside its ring in an upwards direction so as to at least partially surround the inertia member.

Abstract: A seat belt retractor of the inertia type comprises a rotatable shaft with a cam-surface driven thereby. A locking element movable on the cam surface is positively displaced by a control element fitted in a recess thereof and acting from an inertia element. The locking element, when driven by the inertia member, engages with the teeth on an annular locking ring to stop retraction of the seat belt attached to the shaft. The inertia element may be spring preloaded and a locking wheel may be provided to provide alternative locking torque for the inertia element when the car assumes a roll-over condition in which the seat belt would not ordinarily retract quickly.

Abstract: A buckle and tongue combination comprising a ferrule, channeled for acceptance of a bifurcated tongue. A latch member straddling the ferrule, and pivoted thereto, is biased for latching engagement with the tongue. The tongue may be disengaged by pressure in opposition to the bias, applied to a lever which constitutes an extension of the latching member.

Abstract: Apparatus for relieving belt tension on the shoulder belt of a vehicle safety seat belt system is provided. The apparatus has a locking means pneumatically actuated from an unlocking position to a locking position which relieves belt tension on a vehicle occupant when the occupant leans against the back of the seat.

Abstract: A car seat is provided with a roll-up belt collecting apparatus adapted to relieve tension on the belt. The apparatus has a mechanically released locking means actuated in response to movement of a back rest disposed in the seat. The apparatus is inexpensive to produce and highly reliable in operation.