Abstract: The invention relates to a secured device for locking and unlocking a plug on a frame with a wrench. The device has an obstructing component that is mobile with respect to a plug and can be brought from an obstructing position to an unobstructing position in which the wrench can engage a rotor of a bolt when an identification code of the wrench, read by a reader, is in agreement with the code stored in an electronic module that is associated with the plug.

Abstract: The present invention relates to a device for a pavement manhole with a support frame, for closing a panel hinged on the frame using permanent articulation means. The device is characterized in that the pivot axis (8) includes a pin made of at least two parts (13, 14) telescopically mounted into each other and spaced from each other by a spring (15) provided between the two telescopic parts (13, 14) so as to engage and hold the two ends of the pin (8) respectively in two blind holes (20) of the frame. The invention can be used in road equipment.

Abstract: A manhole includes a frame and plug, which moves backward relative to the frame, to ensure the plug reaches a proper closed position in the frame. A first end of a self-locking arm of the structure is pivotally mounted to the frame, and can slide in a fixed guiding groove. The first end of the arm bears on a fixed stop of the frame during tilting of the plug toward the closed position of the frame. The arm moves the plug backwards and so the plug correctly closes the opening of the frame.

Abstract: A device for closing a frame, which has a panel mounted removably on and articulated on the frame includes a hook that has, at an end part, a heel that can stop against a surface of the articulation edge of the frame to immobilize the panel in a secure open upright position, generally perpendicular to the frame. The invention can be applied to roads.

Abstract: A device for articulating a stopper or lid to a frame, in particular of a man hole. The male articulating member may optionally be mounted either removably in its housing of the frame to enable the stopper to be extracted from the frame in its upright position or secured in its housing such that the stopper is not detachable from the frame.

Abstract: A device holding captive a hinge pin in a housing of a cover element, such as a grate or a lid, of a manhole. The device has a cotter pin attached in a removable manner to the cover element to axially retain a hinge pin in a housing of the element against a restoring force of an elastic component inserted between the pin and the bottom of the housing. The invention can be applied to roadway equipment.

Abstract: The present invention relates to a device for a pavement manhole with a support frame, for closing a panel hinged on the frame using permanent articulation means. The device is characterised in that the pivot axis (8) includes a pin made of at least two parts (13, 14) telescopically mounted into each other and spaced from each other by a spring (15) provided between the two telescopic parts (13, 14) so as to engage and hold the two ends of the pin (8) respectively in two blind holes (20) of the frame. The invention can be used in road equipment.

Abstract: A device holding captive a hinge pin in a housing of a cover element, such as a grate or a lid, of a manhole. The device has a cotter pin attached in a removable manner to the cover element to axially retain a hinge pin in a housing of the element against a restoring force of an elastic inserted between the pin and the bottom of the housing. The invention can be applied to roadway equipment.

Abstract: The invention relates to a secured device for locking and unlocking a plug on a frame with a wrench. The device has an obstructing component that is mobile with respect to a plug and can be brought from an obstructing position to an unobstructing position in which the wrench can engage a rotor of a bolt when an identification code of the wrench, read by a reader, is in agreement with the code stored in an electronic module that is associated with the plug.

Abstract: This invention is a device permitting a plug or a cover to lock in a detachable manner onto a frame. In accordance with the invention, the metal washer (9), interposed between the screw head (4) and the mounting surface (7) formed at the bottom of the housing (5) of the cover (2), includes two radial wings diametrically opposite (9a) working together with internal parts (13) of the housing (5) butting and preventing a rotation of the washer (9) during tightening of the fastening screw (3). The invention has applications for public roadways.

Abstract: A device for articulating a stopper or lid to a frame, in particular of a man hole. The male articulating member may optionally be mounted either removably in its housing of the frame to enable the stopper to be extracted from the frame in its upright position or secured in its housing such that the stopper is not detachable from the frame.

Abstract: A device for locking and unlocking a cover or lid on a frame by means of a key. The device includes an element forming the locking bolt formed of an elastically deformable rod protruding from the cover and terminating in a hook-shaped free end suitable for engaging under a rigid rib of the receiver of the frame. The key has a spur making it possible to elastically move the rod to disengage its hook-shaped end from the rigid rib.

Abstract: A device for locking and unlocking a wrench, a plug or lid on a frame, notably of a manhole. A bolt is mounted and guided in translation in a casing of the plug and is held in a locking position by a pre-stressed coil compression spring, between the bolt and a bottom wall of the casing, the bolt (8) comprising a transverse branch on which an end of the wrench may act in order to displace the bolt towards a position for unlocking the plug from the frame.

Abstract: A device for locking and unlocking, with a key, a cover on a frame. The rotor of the lock for this device has a cylindrical barrel mounted for rotation in the cover and being interdependent in rotation with the slide bolt and a cylindrical axle with head mounted loosely in the barrel. The device is used in the area of road works.

Abstract: The invention relates to a grate for closing a drain and similar. The inventive grate comprises an internal elastically deformable grid (2) provided with a locking pin (8) arranged on the free end thereof. Said locking pin is used for connecting the deformable grid to a frame (7) and is arranged under the external solid edge (9) of the grid in such a way that it is invisible from outside when it is incorporated into the frame (7). Said invention is used for a road network.

Abstract: A device for closing a frame, which has a panel mounted removably on and articulated on the frame includes a hook that has, at an end part, a heel that can stop against a surface of the articulation edge of the frame to immobilize the panel in a secure open upright position, generally perpendicular to the frame. The invention can be applied to roads.

Abstract: A fire-resistant road-system apparatus includes at least one cover can be arranged detachably in a frame that is intended to be fixed to the ground, to close a gallery or an underground technical room to protect it from fires. A casing filled with a heat-insulating refractory material is fixed detachably under the cover. The invention is applied in road-system or railroad tunnels.

Abstract: The present invention relates to a device for verification of the position of locking or unlocking of a lock making it possible to immobilize in a frame a lid closing this frame. The device is characterized by the fact that it has arm (10) kinematically connected to bolt (7) of lock (3) so as to move between two extreme positions corresponding respectively to the positions of locking and unlocking of bolt (7) and some means (11, 12) for detection of each of the extreme positions of arm (10) making it possible to provide an information signal depending on whether bolt (7) of lock (3) occupies its position of locking or unlocking of lid (1). The invention can be applied in the domain of roadway equipment.

Abstract: An apparatus for covering a ditch includes a cover and girders having rabbets with projecting edges and flat-lying edges, the cover being placed on the rabbets. The apparatus has, before it is set up, a configuration for installation including one or several bars passing through lower webs of the girders and fixed to the girders and to the cover to maintain their final configuration, and level adjusting screws in edges of the girders defining a polygon providing stable support.

Abstract: An apparatus for connection of a drain inlet to a vertical fixed runoff drainage pipe includes an intermediate adapter plate with a cylindrical shank that can be inserted in an impervious manner into a drainage tube at an adjustable relative height. The drain is slidably mounted such that it is guided bilaterally in translation over the plate. In this way, the drain can be disposed at a final determined position in relation to a curb before being sealed to the curb.