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BOCHUMER GES fur GRUBENAUSBAU
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BOCHUMER GES fur GRUBENAUSBAU
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Application filed by BOCHUMER GES fur GRUBENAUSBAUfiledCriticalBOCHUMER GES fur GRUBENAUSBAU
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Publication of FR1183190ApublicationCriticalpatent/FR1183190A/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
E21D15/50—Component parts or details of props
E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
E21D15/512—Arrangement of valves
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Engineering & Computer Science
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Mining & Mineral Resources
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Mechanical Engineering
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Structural Engineering
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Life Sciences & Earth Sciences
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General Life Sciences & Earth Sciences
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Geochemistry & Mineralogy
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Geology
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FR1183190D1956-09-281957-09-20Perfectionnements apportés aux étançons hydrauliques de mines
ExpiredFR1183190A
(fr)