Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Main Group
E21D 5/00

Lining shafts; Linings therefor (E21D11/00 takes precedence )

8 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • E21D 5/01 using prefabricated lining lowered into a hole filled with liquid or viscous mass
  • E21D 5/012 Use of fluid-tight or anti-friction material on outside of, or between, lining layers
  • E21D 5/016 Bearer curbs
  • E21D 5/02 with wood (E21D5/01, E21D5/012, E21D5/016 take precedence)
  • E21D 5/04 with brick, concrete, stone, or similar building materials (E21D5/01, E21D5/012, E21D5/016 take precedence)
  • E21D 5/11 with combinations of different materials, e.g. wood, metal, concrete (E21D5/01, E21D5/012, E21D5/016 take precedence)
  • E21D 5/12 Accessories for making shaft linings, e.g. suspended cradles, shutterings