Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH 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
  • E21D15/36—Telescopic props with parts held relatively to each other by friction or gripping by a tiltable collar surrounding one or both parts
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D17/00—Excavations; Bordering of excavations; Making embankments
  • E02D17/06—Foundation trenches ditches or narrow shafts
  • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
  • E02D17/083—Shoring struts
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G25/00—Shores or struts; Chocks
  • E04G25/04—Shores or struts; Chocks telescopic
  • E04G25/08—Shores or struts; Chocks telescopic with parts held relatively to each other by friction or gripping

Applications Claiming Priority (1)

Publications (1)

Family

ID=8887828

Family Applications (1)

Country Status (5)

• 0
  • BE BE507231D patent/BE507231A/xx unknown
  • NL NL76254D patent/NL76254C/xx active
  • LU LU31089D patent/LU31089A1/xx unknown
• 1951
  • 1951-06-08 FR FR1038227D patent/FR1038227A/en not_active Expired
• 1952
  • 1952-01-23 CH CH292331D patent/CH292331A/en unknown

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