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Bochumer Eisenhuette Heintzmann GmbH and Co KG
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Bochumer Eisenhuette Heintzmann GmbH and Co KG
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Application filed by Bochumer Eisenhuette Heintzmann GmbH and Co KGfiledCriticalBochumer Eisenhuette Heintzmann GmbH and Co KG
Application grantedgrantedCritical
Publication of FR62678EpublicationCriticalpatent/FR62678E/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
E21D11/14—Lining predominantly with metal
E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
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FR62678D1952-04-071952-04-07Joint à clavette pour profilés en t, h, notamment pour soutenement à cintres de mines
ExpiredFR62678E
(fr)