Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • 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
  • E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
  • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
  • E21D15/14—Telescopic props
  • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
  • E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction

Landscapes

• Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Geology (AREA)
• Clamps And Clips (AREA)

Publications (1)

Family

ID=130858

Family Applications (1)

Country Status (1)

• 0
  • BE BE484780D patent/BE484780A/fr unknown

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