Abstract: In a seat belt buckle a U-shaped main frame (1) has two side portions (7,8) and a tilting locking element (15) located between them to be engageable with a belt tongue (4) when inserted therein, a retaining member (27) being movable in L-shaped cut-outs (11,12) in the side portions between locking and unlocking positions in relation to the locking element (15) by action of the tongue or a release button respectively, and inertial rocking member (20) being pivotally carried by the locking element (15) and spring urged towards a position which locks the retaining member into its said locking position and is unresponsive to pretensioning action on the buckle.

Abstract: A buckle for a safety belt of a vehicle, especially a motor vehicle, the locking member of which is designed as a cylindrical revolving body and which is located with its axis of rotation in the belt tongue entry path, the revolving body having a recess in alignment with the insertion paht and the locking member having a control arm operable by the ejector for the purpose of locking and which ensures that the locking membler has locked and unlocked position.

Abstract: The web-locker retractor has a pair of identical clamping wedges having teeth which are shaped to penetrate the material of a seat belt in order to displace the fibres of the material and engage therewith. Upon an engagement with the belt, the teeth interfit with those of one wedge fitting between those of the other. The teeth are arranged in arrays one of which is an offset mirror image of the other. The teeth of the two arrays are inclined oppositely to the direction of belt protection. Posts and sockets on the wedges co-operate to restrain the wedges to move perpendicularly to the belt plane, against a biasing spring. Upon locking, the web locker does not deflect the belt and therefore does not have to overcome a component of the tensile load on the belt. A retractor of light construction is therefore possible.

Abstract: A device for the tensioning of a safety belt of a vehicle, for eliminating belt slack, in the event of an accident hasa sensor (2, 28, 29, 30) which acts in the event of an extreme change in speed (shock load) by virtue of its inert mass, and a traction cable connected to the safety belt, cable being actuated by gas pressure released from a gas reservoir (2), gas reservoir forming part of said inertial mass.

Abstract: An automatic passenger seat safety belt reeling device, has a steel frame (31, 32, 33) and a reel rotatable in the frame about an axis (39) which is angularly moveable about a second axis (40) offset from the first axis to effect locking of the belt, the first axis being coupled by connecting links (48) to a pivot (46) of a clamping member (47), the clamping member being thereby moveable with the angular movement of the axis (46) of the reel about yet a further axis (45) displaced from the pivot (46), the clamping member having a curved clamping surface (47a) which thereby moves towards a paying-out seat belt (61) to lockingly clamp it against a clamping plate (50) located in the frame.

Abstract: In an automatic spring biassed seat belt retract for passenger seat belts in vehicle a winding reel (15) has a coil spring (17) which winds up as the belt webbing is pulled off the reel, the reel is mounted in a frame (1) with interval teeth (30,31) in apertures (34,35) on each side (22,23) of the frame and the reel assembly is rigidly rockable about a pivot axis (26-45) displaced from the reel periphery to achieve programmed synchronized meshing of teeth (20,21) of the reel with the teeth of the apertures to lock up the reel when excessive vehicle deceleration or excessive webbing pull-out acceleration is sensed by inertia sensing means and such synchronized movement being assured by the manner of the reel mounting on a U-shaped needle arrangement (14,26,31) in the frame.