Aco Severin Ahlmann Gmbh & Co Kg

Aco Corporation

Didier Ollivier

Jérôme Dubois

James Canney

Cyril Leguy

Joseph Miquel

Coverings for structures which can be installed in the ground are known. In order to lock the covering on the structure, closures are known which comprise a snap bolt which is designed in such a way and is mounted movably on the covering () against the force of a spring device in such a way that, during closing of the covering (), the snap bolt is forced back and snaps in behind a counterbearing (') fixed to the structure in a closure position. To simplify the arrangement and also to improve durability, it is proposed that the snap bolt is mounted in a housing () which can be fastened in a housing receptacle of the covering ().

Closure for locking a covering

A tramway track drainage device includes a drain channel section () provided with two ends, at least one end being provided with a wall () closing the end. The device further includes an opening () created in the wall () to form an inspection window for a cable connection () with a rail () and a plug () for closing the opening (), removable from inside the drain channel section ().

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Ecardenville sur Eure, France

Didier Ollivier