Abstract: The invention relates to a cast wall constituted by a succession of panels touching via their end edges and made by casting a binder in contiguous lengths of trench dug in the ground in line with one another, each panel including reinforcement, said wall further including link means between the reinforcements in two contiguous panels. The link means (24, 44) are separate from the reinforcement (22, 42) and comprise an anchor element (24) having a first end fitted with at least one vertical first locking element (28, 30) and a second end engaged in one of said panels (22), and a link element (44) having a first end provided with at least a second locking element (46, 48) suitable for co-operating with the first locking element, and a second end engaged in the other one of said panels (42).

Abstract: The device for connecting multiple-conductor cables is composed of two hermaphroditic connectors which are coupled by means of their electric connection face, the first connector being joined to the input cable and the second connector being joined to the output cable. Locking after coupling of said connectors is performed by means of U-shaped stirrups, the respective arms of which are swung back to a position along the longitudinal sides of the connectors. The pivotally mounted ends of the stirrup arms are each provided with a member having an engagement slot and a locking recess in which is engaged a projecting portion of the body of the other connector.

Abstract: A device for protecting contact elements of a connector having two ends, made up of an inner and outer disk mounted to support cylinders placed in front of the contact face of each end, and pierced with openings. The openings on the outer disk are normally masked by the inner disk, and are open to the contact elements only at the time of connection, under the action of a circumferentially disposed control ring, carrying a lug working with grooves on the support cylinders. The applications of the invention are particularly in the fields of television cameras and oil prospecting.