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Class Information
Number: 405/140
Name: Hydraulic and earth engineering > Underground passageway, e.g., tunnel > Boring > By axially overlapped members
Description: Method or apparatus wherein a plurality of plates or poles are sequentially driven into the earth surrounding the corridor cross sections such that each plate or pole partially extends over the next longitudinally adjacent plate or pole.

Patents under this class:

Patent Number Title Of Patent Date Issued
8245452 Molded sectioned riser and locking cover Aug. 21, 2012
5382114 Tunnel excavation apparatus Jan. 17, 1995
5290125 Tunnel lining method and apparatus suitable for the purpose Mar. 1, 1994
5253955 Automatically advancing supporting and sliding form for introducing an in-situ concrete lining Oct. 19, 1993
5152638 Process and apparatus for excavating tunnels Oct. 6, 1992
5129764 Device to feed reinforcement rods Jul. 14, 1992
5104260 Method and apparatus for tunnelling Apr. 14, 1992
4666336 Method of and apparatus for building thin lining on tunnel May. 19, 1987

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