Abstract: The manual securing device includes a frame (1) supporting a guide rail (2), on which is mounted slidably a support head (3) receiving a chock (4) that can occupy a retracted position and a locked position away from the retracted position. This device is characterized in that the rail (2) has a series of holes (20) the head has a guide sheath (30) slidably engaged on the guide rail (2), the sheath (30) has at least one radial through-hole (31) designed to line up axially with one of the holes (20) of the guide rail (2) by sliding the head (3), and the head (3) has at least one locking pin (32) designed to be engaged in the alignment of holes (20, 31) formed, so that it can be immobilized in translation along the guide rail (2).

Abstract: The device for chocking a goods transportation vehicle at a dock comprises a horizontal support (1) designed to be anchored on the ground fronting a loading dock, a horizontal platen (2) mounted slidingly on a horizontal support (1), a rear chock (3), designed to constitute a stop for the last rear wheel train of the vehicle to be chocked at the dock, the said rear chock being integral with the said platen, a front movable thrust-action chock (4), carried by the horizontal platen (2) at a distance from the rear chock (3), the said platen (2) being actuated slidingly along the support (1) between an anterior rest position and a posterior position of chocking the transportation vehicle at the dock by a motor assembly (5), which is also capable of immobilizing the platen both in anterior rest position and in the position of chocking at the dock and maintaining it in these positions, and the front thrust-action chock being able to occupy a release position, in which it is spaced apart from the trajectory of the r

Abstract: The device for chocking a goods transportation vehicle at a dock comprises a horizontal support (1) designed to be anchored on the ground fronting a loading dock, a horizontal platen (2) mounted slidingly on a horizontal support (1), a rear chock (3), designed to constitute a stop for the last rear wheel train of the vehicle to be chocked at the dock, the said rear chock being integral with the said platen, a front movable thrust-action chock (4), carried by the horizontal platen (2) at a distance from the rear chock (3), the said platen (2) being actuated slidingly along the support (1) between an anterior rest position and a posterior position of chocking the transportation vehicle at the dock by a motor assembly (5), which is also capable of immobilizing the platen both in anterior rest position and in the position of chocking at the dock and maintaining it in these positions, and the front thrust-action chock being able to occupy a release position, in which it is spaced apart from the trajectory of the r

Abstract: A closing device for an aperture in a building includes a guide structure provided with a vertical pair of guide rails and/or an apron in the form of a flexible curtain, movable in the guide structure between an opening position of the aperture and a closing position under the effect of the action of a motorized drive unit including traction cables. The lower part of the apron is formed by a rigid blocking wall to which the traction cables are attached. The upper part of the apron is formed by a flexible blocking wall and is attached by its horizontal lower edge to the rigid blocking wall and by its horizontal upper edge to the lintel of the aperture. In the opening position, the apron is folded onto itself in the upper part of the guide rails, whereby this upper part is horizontal or inclined relative to the horizontal.