Abstract: A safety belt wind-up device includes a rotatable belt wind-up shaft, wind-up force lock device capable of assuming interlocked and uninterlocked positions with the wind-up shaft including a first member rotatively driven by the wind-up shaft when the wind-up force lock device is in the interlocked position, a first cam rotating together with the first member, a second member rotatively driven by the first member engaging the second member, and a second cam rotating together with the second member, and a device for bringing the lock device into the interlocked and uninterlocked positions depending upon engagement and disengagement of a buckle of the device. The device permits a safety belt to be drawn out of the device to a length required for a user's action from the equipped position and completely delete the wind-up force acting upon the belt at the equipped position, whereby the user is not subjected to a belt wind-up force.

Abstract: A buckle assembly for a continuous loop lap and shoulder restraint belt system includes a latch plate assembly carried by the belt and a buckle mounted on the body. The latch plate includes a housing having a cinching member pivotally mounted thereon. The continuous loop belt passes around the cinching member. The buckle has a lip member on the buckle housing which projects into proximity with the restraint belt generally along one side of the cinching member to provide an abutment surface against which the cinching member may clamp the restraint belt. When a load is imposed on the lap belt portion of the continuous loop belt, the cinching member is rotated in the direction to clamp the belt against the abutment surface of the buckle housing to prevent sliding movement of the continuous loop belt in the direction to increase the length of the lap belt.

Abstract: An automatic locking belt carried safety belt take-up reel includes a U-shaped body member provided with longitudinal side arms having a spring biased belt take-up reel journalled between its rear portions and having parallel track grooves formed in the confronting faces of its front portion. A tongue plate slidably engages the grooves and has a transverse rear and a lock bar slidably rests on the tongue plate across the slot and includes upwardly forwardly projecting side legs. A top wall extends between the top forward portions of the side arms and terminates in a front depending lip extending to the level of the groove tops. A safety belt has one end connected to the reel and extends from the bottom thereof upwardly through the slot rearward of the lock bar, about the lock bar and then downwardly between the lock bar and the slot front edge and rearwardly to a vehicle anchor point.

Abstract: A seat belt clamp comprises a clamp member which clamps the belt against a frame base when an abnormally high pull-out force is exerted on the belt. The clamp member is forced toward the belt by the combined effects of the wedging action of a roll around which the belt turns against a wedging surface of the clamp member and oblique guides on the frame which cam the clamp member toward the base and away from the roller. Springs urge both the roller and the clamp member toward released positions for easy, smooth release of the belt when the high pull-out force ceases.

Abstract: A device for causing the rotation of a movable element which is connected to a displaceable component such as a safety belt used for protecting people in a vehicle is described. The rotary device includes drive means which comprises at least one flexible tube which is rolled up and can be expanded under the action of a pressurized fluid, and, preferably, the pressurizing component is a pyrotechnic gas generator placed inside the flexible tube which is rolled up in a helix or a spiral. The device may be used for protection of an individual in a moving vehicle by means of a safety belt. The device can be actuated by a collision detector.

Abstract: A device for preventing a belt from being pulled from a retractor comprises a clamp holder and a base member having closely spaced surfaces defining a gap through which the belt passes and from which the belt runs off forwardly at an angle away from the base member. The holder receives a clamp which has a gripping surface protruding slightly from the holder surface and, in part, defining the gap. The holder is pivoted on the base member, and the clamp and holder are spring-loaded about the pivot axis in a direction which holds the clamp out of engagement with the belt. An abrupt force tending to pull the belt abruptly forward through the gap forces the holder to pivot or rock rearwardly, thus engaging the gripping surface of the clamp with the belt. Forwardly oblique, transverse wedging surfaces on the clamp and clamp holder wedge the clamp tightly against the belt and prevent it from being pulled forward.